- From: Richard Newman <rnewman@franz.com>
- Date: Thu, 25 Jun 2009 20:21:55 -0700
- To: Paul Gearon <gearon@ieee.org>
- Cc: Samuel Pedro <samuelcpspam@gmail.com>, public-sparql-dev@w3.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