Generally, said fuel cell is a net producer of water, and {HEAD ~ said fuel processor} 12 is {TAIL ~ a net consumer} of water 
is
Generally , said fuel cell is a net producer of water , and { HEAD ~ said fuel processor } 12 is { TAIL ~ a net consumer } of water
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH