A set of {HEAD ~ documents} written in the second language are then searched for {TAIL ~ information} responsive to the translated query 
A set of { HEAD ~ documents } written in the second language are then searched for { TAIL ~ information } responsive to the translated query
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH