Hi Robert
I may be splitting hairs here but my reading of your example wordings are not 
quite what is meant.
So for your Martin example my wording would be "The particular instance of 
copyright, on this particular thing, that is held by Martin" so it is not the 
act of holding that is represented by the class but the thing that is held. I 
hope that makes it clearer.
The query pattern looks correct to me.
CC licenses would, to my understanding, be types of E30 Right and so E30-P2-E55 
would be correct.
Rgds
SdS

Stephen Stead
Tel +44 20 8668 3075 
Mob +44 7802 755 013
E-mail [email protected]
LinkedIn Profile http://uk.linkedin.com/in/steads

-----Original Message-----
From: Crm-sig [mailto:[email protected]] On Behalf Of Robert 
Sanderson
Sent: 28 February 2017 19:50
To: [email protected]
Cc: 'David Newbury' <[email protected]>
Subject: [Crm-sig] Rights model

Dear all,

Given the current model, I believe that E30 Right is an instance of the holding 
of a Right, rather than the concept of the Right itself?  For example, E30 is 
not “Copyright” or “Apache 2.0” or “Ownership” … it is “The holding of 
copyright of an object by Martin”, “the use of Apache 2.0 for some code by 
Rob”, or “Ownership of a house by Emma”.

If this is not intended to be the case, can someone provide an example in RDF 
(your serialization preference is fine) that demonstrates two different people 
holding two different rights over the same object?

Given that … we are expected to then use P2_has_type to refer to the sort of 
Right, and thus queries should look for: ?object P104_is_subject_to ?right . 
?right P2_has_type <actual_right> .
If so, how would one refer to the Creative Commons licenses? Still with P2?

Many thanks!

Rob


Example of P104/P105/P75: 
{
  "@context": "https://linked.art/ns/context/1/full.jsonld";, 
  "@id": "https://linked.art/example/object/31";, 
  "@type": "crm:E22_Man-Made_Object", 
  "rdfs:label": "Object", 
  "crm:P104_is_subject_to": [
    "https://linked.art/example/Right/0";, 
    "https://linked.art/example/Right/1";
  ], 
  "crm:P105_right_held_by": [
    {
      "@id": "https://linked.art/example/actor/6";, 
      "@type": "crm:E39_Actor", 
      "rdfs:label": "Owner", 
      "crm:P75_possesses": {
        "@id": "https://linked.art/example/Right/0";, 
        "@type": "crm:E30_Right", 
        "rdfs:label": "Ownership Right by Owner of Object"
      }
    }, 
    {
      "@id": "https://linked.art/example/actor/7";, 
      "@type": "crm:E39_Actor", 
      "rdfs:label": "Holder", 
      "crm:P75_possesses": {
        "@id": "https://linked.art/example/Right/1";, 
        "@type": "crm:E30_Right", 
        "rdfs:label": "Copyright by Holder of Object['s information object]"
      }
    }
  ]
}


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