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SPARQL leveraging Custom Inference Rules & Reasoning: British Royals & Their Siblings
Courtesy of Custom Inference Rules, here's how the SPARQL produces inferred query results by reasoning over sparse data (i.e., data that doesn't explicitly include all the entity relationship types in the query body).
Courtesy of Custom Inference Rules, here's how the SPARQL produces inferred query results by reasoning over sparse data (i.e., data that doesn't explicitly include all the entity relationship types in the query body).

Reuse these data in your code

Query, endpoint and code for reusing the same data
https://linkeddata.uriburner.com/sparql
## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }
Howto write a query SPARQL? (in French)
{{#sparql:## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }
| endpoint = https://linkeddata.uriburner.com/sparql
| 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://linkeddata.uriburner.com/sparql";
    var query = `## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }`;

   // $('#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://linkeddata.uriburner.com/sparql");
    var params = {query:`## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }`};

    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://linkeddata.uriburner.com/sparql"
   data-sgvizler-query="## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib &lt;urn:spin:nanotation:demo:royal:family:lib&gt;  
PREFIX  rel:  &lt;http://purl.org/vocab/relationship/&gt; 

WITH &lt;urn:spin:nanotation:demo:royal:family&gt;
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a &lt;#RoyalPerson&gt; ; 
         rel:siblingOf  ?siblingOf  
  }"
    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://linkeddata.uriburner.com/sparql")
sparql.setQuery("""
    ## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }""")
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://linkeddata.uriburner.com/sparql"
# create query statement
    query <- "## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }"
# 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://linkeddata.uriburner.com/sparql"
sparql = <<-EOT
## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }
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://linkeddata.uriburner.com/sparql';

query = ['## Virtuoso Pragma for invoking Reasoner '...
'## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card '...
'##  '...
'DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>   '...
'PREFIX  rel:  <http://purl.org/vocab/relationship/>  '...
' '...
'WITH <urn:spin:nanotation:demo:royal:family> '...
'SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf '...
'WHERE { ?person  a <#RoyalPerson> ;  '...
'         rel:siblingOf  ?siblingOf   '...
'  } '];

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://linkeddata.uriburner.com/sparql";
$sp_readonly = new SparqlClient();
$sp_readonly->setEndpointRead($endpoint);
$q = <<<EOD
## Virtuoso Pragma for invoking Reasoner
## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card
## 
DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>  
PREFIX  rel:  <http://purl.org/vocab/relationship/> 

WITH <urn:spin:nanotation:demo:royal:family>
SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf
WHERE { ?person  a <#RoyalPerson> ; 
         rel:siblingOf  ?siblingOf  
  }
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://linkeddata.uriburner.com/sparql");
            String querySelect  = "## Virtuoso Pragma for invoking Reasoner \n"
                    + "## Additional Information at https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen?trk=mp-author-card \n"
                    + "##  \n"
                    + "DEFINE input:macro-lib <urn:spin:nanotation:demo:royal:family:lib>   \n"
                    + "PREFIX  rel:  <http://purl.org/vocab/relationship/>  \n"
                    + " \n"
                    + "WITH <urn:spin:nanotation:demo:royal:family> \n"
                    + "SELECT DISTINCT ?person rel:siblingOf as ?relation ?siblingOf \n"
                    + "WHERE { ?person  a <#RoyalPerson> ;  \n"
                    + "         rel:siblingOf  ?siblingOf   \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