{HEAD ~ The major conduit portion} 34 comprises {TAIL ~ a steel pipeline} formed by numerous lengths of steel pipe 
comprises
{ HEAD ~ The major conduit portion } 34 comprises { TAIL ~ a steel pipeline } formed by numerous lengths of steel pipe
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH