Anchor: The ceiling of the tunnel rose two heads taller than Jon, arched near the top.
Entailed: The ceiling of the tunnel is twice as tall as Jon.
Contradiction: Jon could barely fit in the tunnel.
Contradiction: All five men in uniform are hugging.
Contradiction: People walk down the sidewalk.
Contradiction: The donkey is standing next to the little boy.
Contradiction: It isn't the same as improving productivity.