The upper portion 14 can define {TAIL ~ an opening} for filling and dispensing of {HEAD ~ a commodity} stored therein 
The upper portion 14 can define { TAIL ~ an opening } for filling and dispensing of { HEAD ~ a commodity } stored therein
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH