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Entity comparison table
Subject documentation be disjoint from be second domain of be first domain of have axiom
AbstractProperties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodimentPhysicalrepresentsInLanguagerelatedInternalConcept
(<=> 
(instance ?ABS Abstract)
(not
(exists (?POINT)
(or
(located ?ABS ?POINT)
(existant ?ABS ?POINT)))))
PhysicalAn entity that has a location in space-time. Note that locations are themselves understood to have a location in space-tim distanceWhereFn
(=>
(and
(holdsDuring ?INTERVAL (holds ?REL ?INST1 ?INST2))
(temporalPart ?POINT ?INTERVAL)
(instance ?INST1 Physical)
(instance ?INST2 Physical))
(and
(existant ?INST1 ?POINT)
(existant ?INST2 ?POINT)))

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