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Re: Why don't i have any result? Part 2

From: Richard Newman <rnewman@franz.com>
Date: Thu, 25 Jun 2009 20:21:55 -0700
Cc: Samuel Pedro <samuelcpspam@gmail.com>, public-sparql-dev@w3.org
Message-Id: <41672B5B-2754-4745-8D90-A83FF8A9D8BC@franz.com>
To: Paul Gearon <gearon@ieee.org>
> Again, you're trying to match a plain literal against an xsd:string.  
> Apparently Protege allows this, though I didn't realize it was legal  
> to do so.

Just to clarify: it's illegal under simple entailment. It's legal  
under an entailment regime which unifies simple strings and xsd:strings.

That is to say: it's perfectly legal so long as Protégé does not claim  
to be using simple entailment (and I don't think it does).

This is an area that the SPARQL spec does not address: entailment  
regimes live entirely outside of the SPARQL language itself, as well  
as the SPARQL Protocol, so there's no way to find out how your results  
were calculated!
Received on Friday, 26 June 2009 03:36:59 UTC

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