sentence1: On 6 December 1805 , Pearce defeated Jem Belcher in a Championship decider ( a fight reported in Pierce Egan 's first volume of " Boxiana " ) .
sentence2: On December 6 , 1805 , Pearce Jem Belcher defeated a championship decider ( a battle reported in Pierce Egan 's first volume of " Boxiana " ) .