In a specific embodiment, {HEAD ~ power generator} 26 is {TAIL ~ a Kohler 150REOZV} and second power generator 28 is a Kohler 500REOZV 
is
In a specific embodiment , { HEAD ~ power generator } 26 is { TAIL ~ a Kohler 150REOZV } and second power generator 28 is a Kohler 500REOZV
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH