title: Using qualifiers in Wikidata-SPARQL
body: <p>I'm new to SPARQL/Wikidata and trying to figure out how I ask for the time Angelina Jolie started dating each of her spouse. </p>
  
  <p>I see the information in Jolie's Wikidata entry but I don't manage to form a valid query to obtain it. I guess it has something to do with those "qualifiers" I don't fully understand.</p>
  
  <p>This is what I already tried:</p>
  
  <pre><code>PREFIX p: &lt;http://www.wikidata.org/prop/&gt;
  PREFIX v: &lt;http://www.wikidata.org/prop/statement/&gt;
  PREFIX pq: &lt;http://www.wikidata.org/prop/qualifier/&gt;
  SELECT ?x ?xLabel ?start
  WHERE { wd:Q13909 p:P26 ?x . ?x v:P26 wd:Q13909 . ?x pq:P580 ?start . }
  </code></pre>
  
  <p>I know it is wrong.. I just don't know how to fix it.. I want to express the desire to know attributes of a specific previous predicate</p>
  
  <p>Thank you for your help!</p>
  
  <p>p.s: The answer for my query should be:
  Jonny Lee Miller 1995 
  Billy Bob Thornton March 2000
  Brad Pitt 23 August 2014</p>