Otherwise, {HEAD ~ the system} applies additional candidate transformation rules to {TAIL ~ the selected query element} to generate the transformed inexact query output 
Otherwise , { HEAD ~ the system } applies additional candidate transformation rules to { TAIL ~ the selected query element } to generate the transformed inexact query output
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH