{HEAD ~ The rotary machine} comprises {TAIL ~ a driven rotor} and an electric motor having a stator and a driving rotor 
comprises
{ HEAD ~ The rotary machine } comprises { TAIL ~ a driven rotor } and an electric motor having a stator and a driving rotor
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH