{HEAD ~ A principal advantage} of the invention resides in {TAIL ~ its ability} to deal with the film of dirt typically remaining after spraying of an automobile during a washing operation 
resides in
{ HEAD ~ A principal advantage } of the invention resides in { TAIL ~ its ability } to deal with the film of dirt typically remaining after spraying of an automobile during a washing operation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH