(defrelation Physical-State-Change-Event (Subclass-Of Physical-State-Change-Event Intrinsic-State-Change-Event) (Subclass-Of Physical-State-Change-Event Physical-Event) (Default-Disjoint-Script-Type Physical-State-Change-Event) (Temporal-Object-Type Physical-State-Change-Event) (Class Physical-State-Change-Event) (Arity Physical-State-Change-Event 1) (Documentation Physical-State-Change-Event "Physical-State-Change-Event is the collection of events in which some piece of matter changes from one of the physical states of matter to another.
(Physical-State-Change-Event; is; the collection of events)
Physical-State-Change-Event
is
the collection of events