performing {HEAD ~ a voice matching operation} between {TAIL ~ the speaker identity candidates} and the templates in the biometric corpus to obtain speaker identity candidate match scores 
performing { HEAD ~ a voice matching operation } between { TAIL ~ the speaker identity candidates } and the templates in the biometric corpus to obtain speaker identity candidate match scores
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH