The method 2 wherein {HEAD ~ the composite film} is wrapped around {TAIL ~ a pipe} containing a volume of water 
is wrapped around
The method 2 wherein { HEAD ~ the composite film } is wrapped around { TAIL ~ a pipe } containing a volume of water
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH