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Re: owl:sameAs assertions in RDFa

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Mon, 01 Apr 2013 14:58:50 -0400
Message-ID: <5159D8EA.1040809@openlinksw.com>
To: public-rdfa@w3.org
On 4/1/13 2:45 PM, Gregg Kellogg wrote:
> On Apr 1, 2013, at 10:10 AM, Kingsley Idehen <kidehen@openlinksw.com> wrote:
>
>> On 4/1/13 12:59 PM, Gregg Kellogg wrote:
>>> On Apr 1, 2013, at 8:17 AM, Jeremy Tarling <jeremy.tarling@bbc.co.uk> wrote:
>>>
>>>> hello all
>>>>
>>>> I am trying to make an owl:sameAs assertion in some RDFa. I have the following code:
>>>>
>>>> <span rel="rnews:about" resource="http://www.bbc.co.uk/things/4c0ccb99-7042-49e5-bb44-338b540441eb#id">
>>>>     <span rel="owl:sameAs" resource="http://dbpedia.org/resource/Buckinghamshire_County_Council"></span>
>>>> </span>
>>>>
>>>> (I have declared the rnews and owl prefixes elsewhere in the doc)
>>>>
>>>> When I test it only the first statement (rnews:about bbc:thing) is being picked up by linked data extraction tools, the owl:sameAs to the corresponding dbpedia URI is being ignored. Can anyone tell me what I'm doing wrong here please?
>>> Using my distiller [1], If I use the followiing input:
>>>
>>> <div prefix="rnews: http://iptc.org/std/rNews/2011-10-07#">
>>>    <span rel="rnews:about" resource="http://www.bbc.co.uk/things/4c0ccb99-7042-49e5-bb44-338b540441eb#id">
>>>       <span rel="owl:sameAs" resource="http://dbpedia.org/resource/Buckinghamshire_County_Council"></span>
>>>    </span>
>>> </div>
>>>
>>> I get the following output:
>>>
>>> @prefix owl: <http://www.w3.org/2002/07/owl#> .
>>> @prefix rnews: #> .
>>>
>>> <> rnews:about > .
>>>
>>> <http://www.bbc.co.uk/things/4c0ccb99-7042-49e5-bb44-338b540441eb#id> owl:sameAs <http://dbpedia.org/resource/Buckinghamshire_County_Council> .
>>>
>>> Looks okay to me. Note "owl" is defined in the RDFa initial context.
>>>
>>> Gregg
>>>
>>> [1] http://rdf.greggkellogg.net/distiller
>> Gregg,
>>
>> Why not share a complete HTML doc skeleton as this little episode could have a lot of future utility. If you don't mind, please just place the HTML doc you used at Web accessible location (URL).
>>
>> The owl:sameAs and rdfs:sameAs scenario has already spooked me :-)
> Sure, I put up the document at [1] and a hook to my distiller processing the document is at [2]. Note that this example is a simple case of chaining in RDFa, where the object of a parent element becomes the subject of the child element. This works only with @rel (or @rev) and not with @property, as it's considered an /advanced/ feature.
>
> Gregg Kellogg
> gregg@greggkellogg.net
>
> [1] http://greggkellogg.net/sameas-example.html
> [2] http://rdf.greggkellogg.net/distiller?format=turtle&in_fmt=rdfa&uri=http://greggkellogg.net/sameas-example.html

I think this is a great specimen for extractor QA etc..

Kingsley
>
>
>> Kingsley
>>>> JT
>>>>
>>>> -- 
>>>> Jeremy Tarling
>>>> Data Architect, BBC News
>>>> Future Media News & Knowledge
>>>> 4th floor New Broadcasting House
>>>> London W1A 1AA
>>>> tel: 07799 510 992
>>>>
>>>
>>>
>>
>> -- 
>>
>> Regards,
>>
>> Kingsley Idehen	
>> Founder & CEO
>> OpenLink Software
>> Company Web: http://www.openlinksw.com
>> Personal Weblog: http://www.openlinksw.com/blog/~kidehen
>> Twitter/Identi.ca handle: @kidehen
>> Google+ Profile: https://plus.google.com/112399767740508618350/about
>> LinkedIn Profile: http://www.linkedin.com/in/kidehen
>>
>>
>>
>>
>>
>
>
>


-- 

Regards,

Kingsley Idehen	
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
Personal Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca handle: @kidehen
Google+ Profile: https://plus.google.com/112399767740508618350/about
LinkedIn Profile: http://www.linkedin.com/in/kidehen







Received on Monday, 1 April 2013 18:59:14 UTC

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