Anchor: Male youths in drab clothing stare at something above them with an Arabic sign in the background.
Entailed: Some people are wearing drab clothing.
Contradiction: Nobody is looking at anything.
Contradiction: They didn't hear anyone or anything behind them. 
Contradiction: A man is sitting on the subway train looking depressed.
Contradiction: A lady is sitting in a chair.
Contradiction: The cyclist is on his bike.