Add and annotate root Facet classification; align core:hasFacet

No effects were observed on Make-managed files.

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

ontology/uco-bfo.ttl

@@ -66,10 +66,18 @@ uco-core:Event
 		;
 	.
 
+uco-core:Facet
+	rdfs:subClassOf obo:BFO_0000020 ;
+	.
+
 uco-core:Item
 	rdfs:subClassOf drafting:Endurant ;
 	.
 
+uco-core:hasFacet
+	rdfs:subPropertyOf obo:BFO_0000196 ;
+	.
+
 uco-identity:Identity
 	rdfs:subClassOf drafting:Endurant ;
 	.
@@ -105,6 +113,14 @@ uco-pattern:LogicalPattern
 	rdfs:subClassOf drafting:Endurant ;
 	.
 
+[]
+	a owl:Axiom ;
+	rdfs:comment "Note that BFO 196 ('bearer of') has a domain restriction, that the subject not be a spatial region.  This could cause conflicts with UCO's Location namespace: If uco-location:Location or some subclass are believed to be specializations of BFO 6 ('spatial region'), then with this alignment of BFO 196, they cannot have a Facet."@en ;
+	owl:annoatedProperty rdfs:subPropertyOf ;
+	owl:annotatedObject obo:BFO_0000196 ;
+	owl:annotatedSubject uco-core:hasFacet ;
+	.
+
 []
 	a owl:Axiom ;
 	rdfs:comment "Per an example of usage from BFO 2.0, 'the pdf file on your laptop, the pdf file that is a copy thereof on my laptop'."@en ;

tests/exemplars.ttl

@@ -27,6 +27,11 @@ kb:Action-561624b7-1ca5-4571-9ef8-3b9bf65f82b4
 
 kb:ContentData-179c7e84-f72d-47f7-b6f3-3f4a1f0938bd
 	a uco-observable:ContentData ;
+	uco-core:hasFacet kb:ContentDataFacet-a961d865-087b-43bd-ab31-0e33331c5628 ;
+	.
+
+kb:ContentDataFacet-a961d865-087b-43bd-ab31-0e33331c5628
+	a uco-observable:ContentDataFacet ;
 	.
 
 kb:Device-af503a3b-397c-4690-bef9-3972e0f2889d