The system applies the candidate transformation rules to {TAIL ~ the selected query element} to generate {HEAD ~ a transformed query element} that includes a transformed remote query element 
The system applies the candidate transformation rules to { TAIL ~ the selected query element } to generate { HEAD ~ a transformed query element } that includes a transformed remote query element
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH