title: Query dbpedia with SPARQL for films
body: <p>I want to get data (movie title, director name, actor name and the wikipedia link) of all movies present on dbpedia.</p>
  
  <p>I tried this query on <a href="http://dbpedia.org/snorql/" rel="nofollow">http://dbpedia.org/snorql/</a>.</p>
  
  <pre><code>SELECT ?film_title ?star_name ?nameDirector ?link WHERE {
    {  
      SELECT DISTINCT ?movies ?film_title
      WHERE {
         ?movies rdf:type &lt;http://dbpedia.org/ontology/Film&gt;; 
         rdfs:label ?film_title.
      } 
    }. 
    ?movies dbpedia-owl:starring ?star;
    foaf:isPrimaryTopicOf ?link;
    dbpedia-owl:director ?director. 
    ?director foaf:name ?nameDirector.
    ?star foaf:name ?star_name.
    FILTER LANGMATCHES( LANG(?film_title), 'en')
  } LIMIT 100
  </code></pre>
  
  <p>Responses seems correct, but the response time are slow, so I'm wondering if I can improve my query for get a faster response. </p>