title: Virtuoso SPARQL not retrieving values
body: <p>I am uploading a RDF file to a Virtuoso Repository vía de graphic interface (ODS-Briefcase). The file is uploaded successfully. However, every time I make a SPARQL query, an empty result is returned.</p>
  
  <p>I have tried with many other files, and I did not have this problem.</p>
  
  <p>This file size is bigger than the previous ones (14MB), so I guess this could be the cause, but I am not sure about it.</p>
  
  <p>Any help in this matter will be appreciated :)</p>
  
  <p><strong>UPDATE</strong>
  I have tried uploading a smaller file (2KB) and the SPARQL returns results as expected.
  <a href="https://i.stack.imgur.com/aPqVX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aPqVX.png" alt="SPARQL query"></a></p>
  
  <p><a href="https://i.stack.imgur.com/k0BoX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/k0BoX.png" alt="Result"></a></p>
  
  <p>However, I uploaded again the file (14 MB) and it seems it is not correctly uploaded.</p>
  
  <p>When I try to read it from the ODS-Briefcase of Virtuoso, this happens:
  <a href="https://i.stack.imgur.com/mMHQj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mMHQj.png" alt="Error Reading"></a></p>