Update Endurant subclass position; add and demonstrate Quality

References:
* ucoProject/UCO#544 (comment)

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

ontology/uco-bfo.ttl

@@ -27,7 +27,7 @@ drafting:Endurant
 	a owl:Class ;
 	rdfs:subClassOf
 		obo:BFO_0000002 ,
-		uco-core:UcoObject
+		uco-core:UcoThing
 		;
 	rdfs:isDefinedBy <https://github.com/ucoProject/UCO/issues/544> ;
 	owl:disjointWith drafting:Perdurant ;
@@ -43,6 +43,15 @@ drafting:Perdurant
 	owl:disjointWith drafting:Endurant ;
 	.
 
+drafting:Quality
+	a owl:Class ;
+	rdfs:subClassOf
+		drafting:Endurant ,
+		obo:BFO_0000019 ,
+		uco-core:UcoInherentCharacterizationThing
+		;
+	.
+
 uco-action:Action
 	rdfs:subClassOf
 		drafting:Perdurant ,
@@ -72,6 +81,10 @@ uco-location:Location
 		;
 	.
 
+uco-observable:ContentData
+	rdfs:subClassOf obo:BFO_0000004 ;
+	.
+
 uco-observable:File
 	rdfs:subClassOf obo:BFO_0000031 ;
 	.
@@ -92,3 +105,11 @@ uco-pattern:LogicalPattern
 	owl:annotatedTarget obo:BFO_0000031 ;
 	.
 
+[]
+	a owl:Axiom ;
+	rdfs:comment "Per usage with a Quality that presents a ContentData object's ability to be measured with the result being a Hash.  This usage with BFO_0000080 requires the quality-bearer be an independent continuant, but does not require a more specific subclass."@en ;
+	owl:annotatedProperty rdfs:subClassOf ;
+	owl:annotatedSource uco-observable:ContentData ;
+	owl:annotatedTarget obo:BFO_0000004 ;
+	.
+

tests/exemplars.ttl

@@ -25,6 +25,10 @@ kb:Action-561624b7-1ca5-4571-9ef8-3b9bf65f82b4
 	a uco-action:Action ;
 	.
 
+kb:ContentData-179c7e84-f72d-47f7-b6f3-3f4a1f0938bd
+	a uco-observable:ContentData ;
+	.
+
 kb:Event-36ca992e-47e5-43a5-b344-71465c222a05
 	a uco-core:Event ;
 	.
@@ -49,3 +53,8 @@ kb:ObservablePattern-43623d97-2877-46c6-a52c-7e636f767ceb
 	a uco-observable:ObservablePattern ;
 	.
 
+kb:Quality-4b765c1f-362c-4562-a50f-7bb781fe4737
+	a drafting:Quality ;
+	obo:BFO_0000080 kb:ContentData-179c7e84-f72d-47f7-b6f3-3f4a1f0938bd ;
+	.
+