Anchor: A boxer lands a right hook.
Entailed: A boxer is in the ring.
Contradiction: The boxer lands a left hook.
Contradiction: 1997 was the leanest year as far as information goes, because OMB loosened their requirements. 
Contradiction: Two women do field work.
Contradiction: Royko was a widely known bigot who harmed numerous black families throughout Chicago.
Contradiction: Two friends are having fun.