Anchor: People walking along the sidewalk on a cold day.
Entailed: There's a sidewalk with people on it.
Contradiction: There's an empty sidewalk.
Contradiction: The only bird in the picture is a duck.
Contradiction: I hope that you have not been made tired by us.
Contradiction: I wish I had taken three or four swings at Brooke Shields.
Contradiction: He still planned on listening in on the locked room.