{HEAD ~ The water purifier} 3, further comprising {TAIL ~ moveable gates} to control fluid flow from into said body of water 
comprising
{ HEAD ~ The water purifier } 3 , further comprising { TAIL ~ moveable gates } to control fluid flow from into said body of water
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH