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