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Re: Individuals with more than one rdf:type

From: David Navarro Arnao <dnavarro@isoco.com>
Date: Wed, 20 Sep 2006 10:13:36 +0200
Message-ID: <4510F830.1030507@isoco.com>
To: ben syverson <w3@likn.org>, semantic-web@w3.org

Hi Ben,


ben syverson wrote:
> Great -- I had assumed so, but couldn't find any specific information 
> in the specs to back up my assumption...
>
>

That's right, there isn't a specific information for that issue about 
rdf:type, but... if we read [1], we can see that an individual can be 
instance of more than one Class.

Example:

ex:hasMother   rdfs:range   ex:Female .
ex:hasMother   rdfs:range   ex:Person .

For any given statement using this property, say:

exstaff:frank   ex:hasMother   exstaff:frances .

in order for /both/ the |rdfs:range| statements to be correct, it must 
be the case that |exstaff:frances| is /both/ an instance of |ex:Female| 
and of |ex:Person|.



[1]: http://www.w3.org/TR/rdf-primer/#properties



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*David Navarro Arnao  <http://users.isoco.net/%7Ednavarro/>*

R+D engineer

dnavarro(at)isoco.com <mailto:dnavarro@isoco.com>

* *

*iSOCO *

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Received on Wednesday, 20 September 2006 14:00:08 UTC

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