title: SPARQL queries gives different answers on different servers
body: <p>I am trying to run the following sparql query : </p>
  
  <pre><code>PREFIX  dct:  &lt;http://purl.org/dc/terms/&gt; 
  select distinct ?subject 
  where 
  { 
    ?concept rdfs:label 'Artificial intelligence'@en . 
    ?concept ^dct:subject ?subject . 
  }
  LIMIT 100
  </code></pre>
  
  <p>When I run this on dbpedia's public server, I get the following results :
  <a href="http://dbpedia.org/sparql?default-graph-uri=&amp;query=PREFIX++dct%3A++%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2F%3E+select+distinct+%3Fsubject+where+%7B+%3Fconcept+rdfs%3Alabel+%27Artificial+intelligence%27%40en+.+%3Fconcept+%5Edct%3Asubject+%3Fsubject+.+%7D++LIMIT+100&amp;format=text%2Fhtml&amp;CXML_redir_for_subjs=121&amp;CXML_redir_for_hrefs=&amp;timeout=30000&amp;debug=on" rel="nofollow noreferrer">http://dbpedia.org/sparql?default-graph-uri=&amp;query=PREFIX++dct%3A++%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2F%3E+select+distinct+%3Fsubject+where+%7B+%3Fconcept+rdfs%3Alabel+%27Artificial+intelligence%27%40en+.+%3Fconcept+%5Edct%3Asubject+%3Fsubject+.+%7D++LIMIT+100&amp;format=text%2Fhtml&amp;CXML_redir_for_subjs=121&amp;CXML_redir_for_hrefs=&amp;timeout=30000&amp;debug=on</a></p>
  
  <p>However, running the same query on a locally hosted instance of dbpedia, yields : <a href="http://34.195.108.80:8891/sparql?default-graph-uri=&amp;query=PREFIX++dct%3A++%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2F%3E+select+distinct+%3Fsubject+where+%7B+%3Fconcept+rdfs%3Alabel+%27Artificial+intelligence%27%40en+.+%3Fconcept+%5Edct%3Asubject+%3Fsubject+.+%7D++LIMIT+100&amp;format=text%2Fhtml&amp;CXML_redir_for_subjs=121&amp;CXML_redir_for_hrefs=&amp;timeout=30000&amp;debug=on" rel="nofollow noreferrer">http://34.195.108.80:8891/sparql?default-graph-uri=&amp;query=PREFIX++dct%3A++%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2F%3E+select+distinct+%3Fsubject+where+%7B+%3Fconcept+rdfs%3Alabel+%27Artificial+intelligence%27%40en+.+%3Fconcept+%5Edct%3Asubject+%3Fsubject+.+%7D++LIMIT+100&amp;format=text%2Fhtml&amp;CXML_redir_for_subjs=121&amp;CXML_redir_for_hrefs=&amp;timeout=30000&amp;debug=on</a></p>
  
  <p>Why is there a discrepancy in the answers to the point where it's entirely different?</p>