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