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