In {TAIL ~ certain offshore terminals}, {HEAD ~ many conduits} are necessary for carrying fluids between a pipe at the sea floor and a vessel at the sea surface 
In
In { TAIL ~ certain offshore terminals } , { HEAD ~ many conduits } are necessary for carrying fluids between a pipe at the sea floor and a vessel at the sea surface
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH