(Forall (?Self ?Time)
(<=> (Active ?Time Turbine ?Self)
(And (Turbine ?Self)
(Active ?Time Thermal-Component ?Self)
(Active ?Time Work-Producing-Component ?Self))))
(Forall (?Self ?Time)
(<=> (Active ?Time Simple-Turbine ?Self)
(And (Simple-Turbine ?Self)
(Active ?Time Turbine ?Self)
(Active ?Time 1-1-Port-Thermal-Component ?Self))))
(Forall (?Self ?Time)
(<=> (Active ?Time Extraction-Turbine ?Self)
(And (Extraction-Turbine ?Self)
(Active ?Time Turbine ?Self)
(Active ?Time 1-2-Port-Thermal-Component ?Self))))