Under {TAIL ~ another aspect} of the invention, {HEAD ~ the potential full queries} are ranked according to their estimated relevance 
Under
Under { TAIL ~ another aspect } of the invention , { HEAD ~ the potential full queries } are ranked according to their estimated relevance
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH