SPARQL query: Text search for organizations from PM20

Karima Rafes

Text search for organizations from PM20

Text search for organizations from PM20, looking up all available labels, with additional data for identification.
Uses diverse literal properties, brings the best match on top of the list.

Reuse these data in your code

Query, endpoint and code for reusing the same data

Endpoint:

https://zbw.eu/beta/sparql/gnd/query

Query:

PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}

Howto write a query SPARQL? (in French)

{{#sparql:PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}
| endpoint = https://zbw.eu/beta/sparql/gnd/query
| chart=bordercloud.visualization.DataTable
| options=
| log=2
}}

Howto install LinkedWiki in my wiki? Howto insert this graph in my wiki?

Test this script in a new tab.

<html>
    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"  async></script>
    </head>
    <body onload="testQuery();">
        <script>
function testQuery(){
    var endpoint = "https://zbw.eu/beta/sparql/gnd/query";
    var query = `PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, \' -- \'), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, \' \', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, \'\'), \' - \', if(bound( ?terminated), ?terminated, \'\')) as ?time)
}`;

   // $('#bodyContentResearch').append(queryDataset);
    $.ajax({
                url: endpoint,
                dataType: 'json',
                data: {
                    queryLn: 'SPARQL',
                    query: query ,
                    limit: 'none',
                    infer: 'true',
                    Accept: 'application/sparql-results+json'
                },
                success: displayResult,
                error: displayError
        });
}

function displayError(xhr, textStatus, errorThrown) {
    console.log(textStatus);
    console.log(errorThrown);
}

function displayResult(data) {
    $.each(data.results.bindings, function(index, bs) {
        console.log(bs);
        $("body").append(JSON.stringify(bs) + "<hr/>");
    });
}

        </script>
    </body>
</html>

Test this script in a new tab.

<html>
    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"  async></script>
    </head>
    <body onload="testQuery();">
        <script>
function testQuery(){
    var url = new URL("https://zbw.eu/beta/sparql/gnd/query");
    var params = {query:`PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, \' -- \'), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, \' \', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, \'\'), \' - \', if(bound( ?terminated), ?terminated, \'\')) as ?time)
}`};

    url.search = new URLSearchParams(params).toString();

    var myHeaders = new Headers();
    myHeaders.append("Accept", "application/sparql-results+json");

    var requestOptions = {
      method: 'GET',
      headers: myHeaders,
      redirect: 'follow'
    };

    fetch(url, requestOptions)
        .then(response => response.json())
        .then(result => displayResult(result))
        .catch(error => displayError(error));
}

function displayError(error) {
    console.log(error);
}

function displayResult(data) {
    data.results.bindings.forEach(bs => {
            console.log(bs);
            $("body").append(JSON.stringify(bs) + "<hr/>");
    });
}
        </script>
    </body>
</html>

Test this script in a new tab (Careful, several charts need a API key).
Howto insert this graph in my html page?

<html>
    <head>
     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/css/all.min.css">

     <script
            src="https://code.jquery.com/jquery-3.4.1.min.js"
            integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
            crossorigin="anonymous"> </script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"> </script>
     <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"> </script>

     <script type="text/javascript" src="https://bordercloud.github.io/sgvizler2/sgvizler2/sgvizler2.js" defer> </script>
     <script type="text/javascript" src="https://linkedwiki.com/js/initExampleHTML.js"  defer > </script>
    </head>
<body style="margin:0;">
<div id="sgvzl_example_query"
   data-sgvizler-endpoint="https://zbw.eu/beta/sparql/gnd/query"
   data-sgvizler-query="PREFIX  gndo:   &lt;https://d-nb.info/standards/elementset/gnd#&gt;
PREFIX skos: &lt;http://www.w3.org/2004/02/skos/core#&gt;
PREFIX  text:   &lt;http://jena.apache.org/text#&gt;
PREFIX xsd: &lt;http://www.w3.org/2001/XMLSchema#&gt;
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service &lt;http://zbw.eu/beta/sparql/pm20/query&gt; {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( &lt;http://purl.org/pressemappe20/folder/co/000032&gt; )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, &#039; -- &#039;), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, &#039; &#039;, ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, &#039;&#039;), &#039; - &#039;, if(bound( ?terminated), ?terminated, &#039;&#039;)) as ?time)
}"
    data-sgvizler-chart='bordercloud.visualization.DataTable'
    data-sgvizler-chart-options=''
    data-sgvizler-endpoint_output_format='json'
    data-sgvizler-log='2'
    style='width:100%; height:auto;'
    lang='en'
   />

<script>
/*$(function() {
   sgvizler2.containerDrawAll({
       // Google Api key
       googleApiKey : "GOOGLE_MAP_API_KEY",
       // OpenStreetMap Access Token
       //  https://www.mapbox.com/api-documentation/#access-tokens
       osmAccessToken : "OSM_MAP_API_KEY"
     });
});*/
</script>

</body>
</html>

from SPARQLWrapper import SPARQLWrapper, JSON

sparql = SPARQLWrapper("https://zbw.eu/beta/sparql/gnd/query")
sparql.setQuery("""
    PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}""")
sparql.setReturnFormat(JSON)
results = sparql.query().convert()

for result in results["results"]["bindings"]:
    print(result)
    #print(result["label"]["value"])

Howto use SPARQL with Python ?

library(SPARQL) # SPARQL querying package
library(ggplot2)

# Step 1 - Set up preliminaries and define query
# Define the data.gov endpoint
    endpoint <- "https://zbw.eu/beta/sparql/gnd/query"
# create query statement
    query <- "PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}"
# Step 2 - Use SPARQL package to submit query and save results to a data frame
qd <- SPARQL(endpoint,query,curl_args=list(useragent=R.version.string))
df <- qd$results

SPARQL with R in less than 5 minutes

#!/usr/bin/env ruby
#
# Install sparql for Ruby
#   gem update --system
#   gem install sparql
#
require 'sparql/client'

endpoint = "https://zbw.eu/beta/sparql/gnd/query"
sparql = <<-EOT
PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}
EOT

#For Wikidata, the method get is required
#For other SPARQL endpoints, the method post is prefered
client = SPARQL::Client.new(endpoint, :method => :get)
rows = client.query(sparql)

puts "Number of rows: #{rows.size}"
for row in rows
  for key,val in row do
    # print "#{key.to_s.ljust(10)}: #{val}\t"
    print "#{key}: #{val}\t"
  end
  print "\n"
end

Doc Ruby for SPARQL 1.1

endpoint = 'https://zbw.eu/beta/sparql/gnd/query';

query = ['PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#> '...
'PREFIX skos: <http://www.w3.org/2004/02/skos/core#> '...
'PREFIX  text:   <http://jena.apache.org/text#> '...
'PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> '...
'# '...
'select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel  '...
'?time ?gndId '...
'# debug information '...
'# ?score ?literal ?labels '...
'where { '...
'  # lookup additional information about pm20 folder '...
'  service <http://zbw.eu/beta/sparql/pm20/query> { '...
'    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels) '...
'    where { '...
'      values ( ?pm20 ) { '...
'        ( <http://purl.org/pressemappe20/folder/co/000032> ) '...
'      } '...
'      ?pm20 skos:prefLabel ?prefLabel ; '...
'            skos:altLabel ?alt . '...
'      # truncate combined alt labels '...
'      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel) '...
'    } '...
'    group by ?pm20 ?prefLabel '...
'  } '...
'  # create one string of all labels '...
'  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels) '...
'  # '...
'  # limit number of results to 30 '...
'  (?gnd ?score ?literal) text:query ( ?labels 30 ) . '...
'  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ; '...
'       gndo:gndIdentifier ?gndId . '...
'  optional { '...
'    ?gnd gndo:dateOfEstablishment ?established . '...
'  } '...
'  optional { '...
'    ?gnd gndo:dateOfTermination ?terminated . '...
'  } '...
'  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time) '...
'} '];

url_head = strcat(endpoint,'?query=');
url_query = urlencode(query);
format = 'text/tab-separated-values';
url_tail = strcat('&format=', format);

url = strcat(url_head, url_query, url_tail);

% get the data from the endpoint
query_results = urlread(url);

% write the data to a file so that tdfread can parse it
fid = fopen('query_results.txt','w');
if fid>=0
    fprintf(fid, '%s\n', query_results)
    fclose(fid)
end

% this reads the tsv file into a struct
sparql_data = tdfread('query_results.txt')

Project Github MatlabSPARQL

<?php
require __DIR__ . '/../vendor/autoload.php';
use BorderCloud\SPARQL\SparqlClient;

$endpoint ="https://zbw.eu/beta/sparql/gnd/query";
$sp_readonly = new SparqlClient();
$sp_readonly->setEndpointRead($endpoint);
$q = <<<EOD
PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX  text:   <http://jena.apache.org/text#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
#
select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel 
?time ?gndId
# debug information
# ?score ?literal ?labels
where {
  # lookup additional information about pm20 folder
  service <http://zbw.eu/beta/sparql/pm20/query> {
    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels)
    where {
      values ( ?pm20 ) {
        ( <http://purl.org/pressemappe20/folder/co/000032> )
      }
      ?pm20 skos:prefLabel ?prefLabel ;
            skos:altLabel ?alt .
      # truncate combined alt labels
      bind(coalesce(strbefore(?alt, ' -- '), ?alt) as ?altLabel)
    }
    group by ?pm20 ?prefLabel
  }
  # create one string of all labels
  bind(concat(?prefLabel, ' ', ?altLabels) as ?labels)
  #
  # limit number of results to 30
  (?gnd ?score ?literal) text:query ( ?labels 30 ) .
  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ;
       gndo:gndIdentifier ?gndId .
  optional {
    ?gnd gndo:dateOfEstablishment ?established .
  }
  optional {
    ?gnd gndo:dateOfTermination ?terminated .
  }
  bind(concat(if(bound(?established), ?established, ''), ' - ', if(bound( ?terminated), ?terminated, '')) as ?time)
}
EOD;
$rows = $sp_readonly->query($q, 'rows');
$err = $sp_readonly->getErrors();
if ($err) {
      print_r($err);
      throw new Exception(print_r($err, true));
}

foreach ($rows["result"]["variables"] as $variable) {
        printf("%-20.20s",$variable);
        echo '|';
 }
 echo "\n";

foreach ($rows["result"]["rows"] as $row) {
        foreach ($rows["result"]["variables"] as $variable) {
            printf("%-20.20s", $row[$variable]);
            echo '|';
        }
        echo "\n";
 }
 ?>

Project Github BorderCloud/SPARQL

import com.bordercloud.sparql.*;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;

public class Main {

    public static void main(String[] args) {
        try {
            URI endpoint = new URI("https://zbw.eu/beta/sparql/gnd/query");
            String querySelect  = "PREFIX  gndo:   <https://d-nb.info/standards/elementset/gnd#> \n"
                    + "PREFIX skos: <http://www.w3.org/2004/02/skos/core#> \n"
                    + "PREFIX  text:   <http://jena.apache.org/text#> \n"
                    + "PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> \n"
                    + "# \n"
                    + "select distinct ?pm20 (?prefLabel as ?pm20Label) ?gnd ?gndLabel  \n"
                    + "?time ?gndId \n"
                    + "# debug information \n"
                    + "# ?score ?literal ?labels \n"
                    + "where { \n"
                    + "  # lookup additional information about pm20 folder \n"
                    + "  service <http://zbw.eu/beta/sparql/pm20/query> { \n"
                    + "    select ?pm20 ?prefLabel (group_concat(?altLabel) as ?altLabels) \n"
                    + "    where { \n"
                    + "      values ( ?pm20 ) { \n"
                    + "        ( <http://purl.org/pressemappe20/folder/co/000032> ) \n"
                    + "      } \n"
                    + "      ?pm20 skos:prefLabel ?prefLabel ; \n"
                    + "            skos:altLabel ?alt . \n"
                    + "      # truncate combined alt labels \n"
                    + "      bind(coalesce(strbefore(?alt, \' -- \'), ?alt) as ?altLabel) \n"
                    + "    } \n"
                    + "    group by ?pm20 ?prefLabel \n"
                    + "  } \n"
                    + "  # create one string of all labels \n"
                    + "  bind(concat(?prefLabel, \' \', ?altLabels) as ?labels) \n"
                    + "  # \n"
                    + "  # limit number of results to 30 \n"
                    + "  (?gnd ?score ?literal) text:query ( ?labels 30 ) . \n"
                    + "  ?gnd gndo:preferredNameForTheCorporateBody ?gndLabel ; \n"
                    + "       gndo:gndIdentifier ?gndId . \n"
                    + "  optional { \n"
                    + "    ?gnd gndo:dateOfEstablishment ?established . \n"
                    + "  } \n"
                    + "  optional { \n"
                    + "    ?gnd gndo:dateOfTermination ?terminated . \n"
                    + "  } \n"
                    + "  bind(concat(if(bound(?established), ?established, \'\'), \' - \', if(bound( ?terminated), ?terminated, \'\')) as ?time) \n"
                    + "} \n";
            SparqlClient sc = new SparqlClient(false);
            sc.setEndpointRead(endpoint);
            SparqlResult sr = sc.query(querySelect);
            //sc.printLastQueryAndResult();

            printResult(sr.getModel(),30);
        } catch (URISyntaxException | SparqlClientException e) {
            System.out.println(e);
            e.printStackTrace();
        }
    }

    public static void printResult(SparqlResultModel rs , int size) {
        for (String variable : rs.getVariables()) {
            System.out.print(String.format("%-"+size+"."+size+"s", variable ) + " | ");
        }
        System.out.print("\n");
        for (HashMap row : rs.getRows()) {
            for (String variable : rs.getVariables()) {
                System.out.print(String.format("%-"+size+"."+size+"s", row.get(variable)) + " | ");
            }
            System.out.print("\n");
        }
    }
}

For example, with Gradle :

apply plugin: 'java'
apply plugin: 'application'

// This comes out to package + '.' + mainClassName
mainClassName = 'Main'

group 'org.example'
version '1.0-SNAPSHOT'

repositories {
    mavenCentral()
}
dependencies {
    compile "com.bordercloud:SPARQL-JAVA:[1.0,)"
}

Project Github BorderCloud/SPARQL-JAVA
Other SPARQL client : RDF4J

You can use the SPARQL clients in Java : BorderCloud/SPARQL-JAVA or RDF4J

Table view

Simple view on the data

Reuse these data in your code

Query, endpoint and code for reusing the same data