Anchor: A crowd is outside watching someone in the center of them.
Entailed: Someone is surrounded by a crowd of people.
Contradiction: A crowd has surrounded someone they are not watching.
Contradiction: The meat is in the bathtub.
Contradiction: She was wearing a life-belt when she was put into the boat. 
Contradiction: A couple are enjoying a meal at a restaurant.
Contradiction: A boy dunks a basketball