{TAIL ~ The power generation process} 4 wherein the stream of steam is passed through {HEAD ~ a body} of oil 
{ TAIL ~ The power generation process } 4 wherein the stream of steam is passed through { HEAD ~ a body } of oil
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH