{HEAD ~ The present invention} relates to an apparatus, system, and {TAIL ~ method} for modifying the flow of water in a channel 
relates to
{ HEAD ~ The present invention } relates to an apparatus , system , and { TAIL ~ method } for modifying the flow of water in a channel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH