Steve, the list doesn't need to hear this, but you are not correct here. 
The relators are defined as owl:ObjectProperties (not just "properties") 
which means that they cannot take text as objects. However, I want LoC 
to confirm that, because this is their doing.

kc


On 10/17/23 8:17 AM, McDonald, Stephen wrote:
> 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
>>>>
>>>> Caution: This message originated from outside of the Tufts University
>>>> organization. Please exercise caution when clicking links or opening
>>>> attachments. When in doubt, email the TTS Service Desk at
>>>> [log in to unmask]<mailto:[log in to unmask]> or call them directly at 617-627-3376.
>> --
>> Karen Coyle
>> [log in to unmask] http://kcoyle.net
>> m: +1-510-435-8234
>> skype: kcoylenet/+1-510-984-3600

-- 
Karen Coyle
[log in to unmask]
http://kcoyle.net