title: SPARQL QUERY given nothing
body: <p>I have two graph named as <code>&lt;http://localhost:5822/fub&gt;</code> &amp; <code>&lt;http://localhost:5822/fub_byrn&gt;</code>.
  Both graph contain MetaphoneCode.
  I wanted to get result for Metaphone that have same  MetaphoneCode appear in both Graph.
  After i executing this query i am no geting result.
  Need help and suggestion.</p>
  
  <pre><code>SELECT ?MetaPhone 
  WHERE
  {
    GRAPH &lt;http://localhost:5822/fub&gt;
    { 
      GRAPH ?g {}
      { ?s &lt;http://localhost:2020/vocab/dbo_UniData_MetaPhoneCode&gt; ?MetaPhone . }
    }
    GRAPH &lt;http://localhost:5822/fub_byrn&gt; 
    {
      GRAPH ?g {}
      { ?s &lt;http://localhost:2020/vocab/dbo_FUB_Bayern_MetaPhoneCode&gt; ?MetaPhone . }
    }
  }
  LIMIT 100
  </code></pre>