the class of operating mode models of water
the water involved
(Forall (?Self ?Water-Involved) (<=> (And (= (Water-Involved ?Self) ?Water-Involved) (Water-Operating-Mode ?Self)) (And (Operating-Mode-Model ?Self) (Water ?Water-Involved)))) (Forall (?Self ?Time) (<=> (Active ?Time Water-Operating-Mode ?Self) (And (Water-Operating-Mode ?Self) (Active ?Time Operating-Mode-Model ?Self))))