{HEAD ~ The wind turbine generator} mainly includes {TAIL ~ an anemometer}, an anemoscope, a nacelle swiveling mechanism which turns a nacelle, and a control unit which controls the nacelle swiveling mechanism 
includes
{ HEAD ~ The wind turbine generator } mainly includes { TAIL ~ an anemometer } , an anemoscope , a nacelle swiveling mechanism which turns a nacelle , and a control unit which controls the nacelle swiveling mechanism
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH