These and {HEAD ~ other objects} of the instant invention are also achieved by providing {TAIL ~ an apparatus} for automatically dislodging a person or thing trapped at the drain of a liquid reservoir 
are achieved by providing
These and { HEAD ~ other objects } of the instant invention are also achieved by providing { TAIL ~ an apparatus } for automatically dislodging a person or thing trapped at the drain of a liquid reservoir
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH