Many thanks, Gerald!

In the mean time we’re using P1 is identified by to relate the Place to the SP5 
(apologies for the typo in the subject line!), based on it being an E47 Spatial 
Coordinates, a subclass of E41 Appellation.  This seems defensible … but a more 
precise definition of the semantics would be greatly appreciated to know if 
it’s definition (P168) or identification (P1).

Rob


From: "Hiebel, Gerald" <[email protected]>
Date: Wednesday, July 11, 2018 at 2:28 PM
To: Robert Sanderson <[email protected]>, "[email protected]" 
<[email protected]>
Subject: Re: [Crm-sig] CRMGeo: super classes of SP4

Dear Rob, thanks very much  for pointing out the issue, we will look into it.
Best Gerald


Am 6. Juli 2018 01:45:58 schrieb Robert Sanderson <[email protected]>:

Dear all,

In the version 1.2 PDF [1] on page 10, it says that SP5 Geometric Place 
Expression is a subclass of E94 Space Primitive. This allows it to be 
referenced using P168 place is defined by.

However in the RDF encoding for CRM core, E94 is mapped to rdfs:Literal which 
cannot also be used as a subclass with E73 and E47. This is reflected in the 
RDF for CRMGeo by simply not including E94 as a subclass.

So … the abstract documentation and the RDF mapping are significantly 
inconsistent. Can an SP5 be used as the object of a P168 relationship (and 
hence the mapping should be updated to include it) or not (and hence the 
documentation should be updated to remove it)?

Many thanks!

Rob

[1] http://www.cidoc-crm.org/crmgeo/sites/default/files/CRMgeo1_2.pdf


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