Re: [dxwg] Relation to real world entities (#168)

I've been trying to trace back this issue to the UCR and discussions, and couldn't find a clear link (there are meetings referring 'use cases on real world objects' (see [here](https://www.w3.org/2017/dxwg/wiki/index.php?search=real+world&title=Special%3ASearch&go=Go)) but it is unclear if it relates to this issue - it would be good to hear from @jpullmann). Indeed, there seems to be no related use case in the [UCR document](https://www.w3.org/TR/dcat-ucr/). 

However, at the moment there is no way to link a ```dcat:Resource``` to the entity it refers to and this would be an important relationship. There is ```dcat:theme``` that relates the resource to a category (the range is ```skos:Concept```, and it is defined as a subclass of ```dct:subject```). I note that the (non-normative) [alignment to schema.org](https://www.w3.org/TR/vocab-dcat-3/#dcat-sdo) associates ```dcat:theme``` to ```sdo:about```. But my understanding is that ```sdo:about``` is broader, and provides to link to entites, as does the term used in OBO Foundry ontologies: ['is about'](http://purl.obolibrary.org/obo/IAO_0000136) term.

We had relaxed the ```dcat:theme```'s domain (see https://github.com/w3c/dxwg/issues/123) - perhaps we should relax the range too (or consider other property)?

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Received on Monday, 1 March 2021 18:21:20 UTC