code for designating the second set of {TAIL ~ candidates} as {HEAD ~ the plurality} of information extractors 
code for designating the second set of { TAIL ~ candidates } as { HEAD ~ the plurality } of information extractors
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH