It is an inherent problem when creating a vocabulary--should this set of traits be properties or types? Whichever choice you make, you face the problem that other vocabularies may choose differently. I believe this vocabulary defines relators as properties. But they also want to show how the terms are related to terms in OWL and BIBFRAME where they are defined as types.

					Steve McDonald
					[log in to unmask]


> -----Original Message-----
> From: Code for Libraries <[log in to unmask]> On Behalf Of Karen
> Coyle
> Sent: Tuesday, October 17, 2023 10:40 AM
> To: [log in to unmask]
> Subject: Re: [CODE4LIB] [External] [CODE4LIB] Question about multiple
> declarations
> 
> tl;dr: Does LoC intend that its relator properties be used with both "thing" and
> "string" objects?
> 
> kc
> 
> 
> On 10/10/23 8:02 AM, McDonald, Stephen wrote:
> > That is not correct.  The statement
> >   <rdfs:subPropertyOf
> >   rdf:resource="http://purl.org/dc/elements/1.1/contributor"/>
> >
> > is a single predicate-object statement, enclosed within angle brackets.
> > The following statement
> > <rdf:type
> > rdf:resource="http://www.w3.org/2002/07/owl#ObjectProperty"/>
> >
> > is also separate statement, enclosed within angle brackets. The OWL
> statement is not part of the subPropertyOf statement. The next statement is
> also a separate statement. So we have three statements:
> >
> > subPropertyOf: DC contributor
> > type: owl ObjectProperty
> > type: BIBFRAME role
> >
> > The term you were looking up is the implied subject of the statements,
> making these RDF triples.
> >
> > 					Steve McDonald
> > 					[log in to unmask]
> >
> >
> >> -----Original Message-----
> >> From: Code for Libraries <[log in to unmask]> On Behalf Of Karen
> >> Coyle
> >> Sent: Monday, October 9, 2023 5:36 PM
> >> To: [log in to unmask]
> >> Subject: [External] [CODE4LIB] Question about multiple declarations
> >>
> >> All,
> >>
> >> I am looking at the LoC relators at id.loc.gov, and am trying to
> >> understand the implications of the multiple declarations for relator terms.
> >>
> >> <rdfs:subPropertyOf
> >> rdf:resource="http://purl.org/dc/elements/1.1/contributor"/>
> >> <rdf:type
> >> rdf:resource="http://www.w3.org/2002/07/owl#ObjectProperty"/>
> >> <rdf:type rdf:resource="http://id.loc.gov/ontologies/bibframe/Role"/>
> >>
> >> dct:contributor is not an Object Property; there is no object type
> >> given, so I suppose it is de facto an Annotation Property. I read the
> >> next statement as narrowing, so at statement 2 we have:
> >>     subproperty of dct:contributor AND an owl:ObjectProperty
> >>
> >> If my reading is correct, it would be a violation of this to use the
> >> relator with a string rather than a thing.
> >>
> >> (Stop me here if I'm wrong.)
> >>
> >> Then the 3rd statement appears to say that the relator is a bf:Role,
> >> which is a BIBFRAME-specific class. I can't wrap my head around the
> >> functionality of this statement and would love a brief explanation.
> >> I'm undoubtedly not into BIBFRAME deep enough to grok this.
> >>
> >> Also, my reading is that each relator is ALL THREE OF THESE; this is
> >> an AND not at OR. Right?
> >>
> >> Thanks for any help,
> >> kc
> >>
> >> --
> >> Karen Coyle
> >> [log in to unmask] http://kcoyle.net
> >> m: +1-510-435-8234
> >> skype: kcoylenet/+1-510-984-3600
> >>
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> 
> --
> Karen Coyle
> [log in to unmask] http://kcoyle.net
> m: +1-510-435-8234
> skype: kcoylenet/+1-510-984-3600