Some questions consideriing testcases

Hello!
My name is Selver Softic and I'm working  currently  on  implementation of
..NET RDFa Extractor Library in C# based on implementation of RDFa Extractor
in Java of Michael Hausenblas and Semantic Web/RDF Library for C#/.NET of
Joshua Tauberer as a part of preparations for my master thesis at Joanneum
Research.

I'm quite new  to RDFa  and maybe I'm just wrong but SPARQL Query for
verifing testcase 5 doesn't work properly.

I'm getting:
ASK WHERE {
<http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/0005.xhtml> <
http://creativecommons.org/ns#license> <
http://creativecommons.org/licenses/by/nc-nd/2.5/> .
 }
Reference query (
http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/0005.sparql)
looks like:
ASK WHERE {
    <
http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/0005.xhtml> <
http://creativecommons.org/ns#license> <
http://creativecommons.org/licenses/by/nc-nd/2.5/> .
}

I can't see the difference except of some whitespaces :-( ?!

When trying to verify my result I get always negative result.

I'm testing at the moment with Virtuoso Web Service (openlinksw.com) (
http://demo.openlinksw.com/sparql) endpoint.
When I tried to use  endpoint at sparql.org service seemed to be not
accessible.

Same thing when i tried to query approved testcases via W3C Semantic Web
Deployment Wiki at http://www.w3.org/2006/07/SWD/wiki/RDFaTC.


Is there any chance for reactivating this sparql endpoint.

Any Hints are welcome

Thanks in Advance

Selver