(Nth-Domain Active 3 Model-Fragment)
(=> (Active ?Time ?Model-Fragment-Class ?Mf-Instance)
(Subclass-Of ?Model-Fragment-Class Model-Fragment))
(<= (Domain $X Model-Fragment) (Participant-Function $X))
(Inherited-Slot-Value Participant-Function Domain Model-Fragment)
(<=> (Participant-Function ?F)
(And (Unary-Function ?F)
(Domain ?F Model-Fragment)
(Range ?F Entity)))
(Domain ?F (Kappa (?X) (Or (Model-Fragment ?X) (Entity ?X))))
(<=> (Attribute-Function ?F)
(And (Unary-Function ?F)
(Domain ?F
(Kappa (?X) (Or (Model-Fragment ?X) (Entity ?X))))))