Anchor: Then he was jerked back, off balance, staggering on to bring up against the wall.
Entailed: He was pulled back, off balance, and stumbled to bring up against the wall.
Contradiction: He was patted on the head and stayed perfectly balanced.
Contradiction: We should continue for a while -- we may finish soon.
Contradiction: My background is musical so I've learned to play both flute and piano, and I know he is good 
Contradiction: A person is sleeping on city sidewalk.
Contradiction: there are two men in this picture