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))))