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Re: Last Call comments on RDFa Core

From: Toby Inkster <tai@g5n.co.uk>
Date: Mon, 13 Dec 2010 12:12:54 +0000
To: Harry Halpin <hhalpin@w3.org>
Cc: Ivan Herman <ivan@w3.org>, public-rdfa-wg@w3.org
Message-ID: <1292242375.5556.108.camel@ophelia2.g5n.co.uk>
On Mon, 2010-12-13 at 11:19 +0000, Harry Halpin wrote:
> To my knowledge, I have not seen a single halfway convincing usecase
> where there is a reason why you would want to 'mention' a URI, i.e.
> refer to it as a literal or xsd string. 

Given the following:

###
@prefix con: <http://www.w3.org/2000/10/swap/pim/contact#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

<http://www.w3.org/People/Berners-Lee/card#i>
	con:preferredURI <http://www.w3.org/People/Berners-Lee/card#i> ;
	owl:sameAs <http://identi.ca/user/45563> .
###

An OWL-capable processor can make the following conclusion:

###
@prefix con: <http://www.w3.org/2000/10/swap/pim/contact#> .

<http://www.w3.org/People/Berners-Lee/card#i>
	con:preferredURI <http://identi.ca/user/45563> .
###

However, given:

###
@prefix con: <http://www.w3.org/2000/10/swap/pim/contact#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

<http://www.w3.org/People/Berners-Lee/card#i>
	con:preferredURI "http://www.w3.org/People/Berners-Lee/card#i" ;
	owl:sameAs <http://identi.ca/user/45563> .
###

It will not come to a mistaken conclusion about what timbl's preferred
URI for himself is.

-- 
Toby A Inkster
<mailto:mail@tobyinkster.co.uk>
<http://tobyinkster.co.uk>
Received on Monday, 13 December 2010 12:13:43 UTC

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