the control volume with three input streams
(Forall (?Self ?Time)
(<=> (Active ?Time 3-Input-Control-Volume ?Self)
(And (3-Input-Control-Volume ?Self)
(Active ?Time 2-Input-Control-Volume ?Self))))
(Forall (?Self ?Time)
(<=> (Active ?Time 3-Input-Control-Volume ?Self)
(And (3-Input-Control-Volume ?Self)
(Active ?Time 2-Input-Control-Volume ?Self))))
(Attribute-Function-Of Inlet-Stream3 3-Input-Control-Volume)
(Forall (?Self ?Time)
(<=> (Active ?Time 3-1-Control-Volume ?Self)
(And (3-1-Control-Volume ?Self)
(Active ?Time 3-Input-Control-Volume ?Self)
(Active ?Time 1-Output-Control-Volume ?Self))))