{TAIL ~ The supply subsystem} includes {HEAD ~ a replaceable exterminating liquid reservoir}, an electrically driven pump and switch means coupled to a source of electrical energy to selectively energize the pump 
{ TAIL ~ The supply subsystem } includes { HEAD ~ a replaceable exterminating liquid reservoir } , an electrically driven pump and switch means coupled to a source of electrical energy to selectively energize the pump
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD 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 OTH