A pumping apparatus actuated by waves in {HEAD ~ a large body} of water for pumping water to {TAIL ~ a remote location} 
A pumping apparatus actuated by waves in { HEAD ~ a large body } of water for pumping water to { TAIL ~ a remote location }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL