said polymeric material is selected from {TAIL ~ a group} consisting of {HEAD ~ polypropylene}, polyethylene, and nylon 
said polymeric material is selected from { TAIL ~ a group } consisting of { HEAD ~ polypropylene } , polyethylene , and nylon
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH