Anchor: A man is playing chess with a young boy.
Entailed: A child is playing chess with an older man.
Contradiction: A man is playing chess against a robot.
Contradiction: Nothing is missing. 
Contradiction: The area around and beyond Prada Marquis de Pombal is what is referred to with the blanket term "North Lisbon."
Contradiction: The bicycler is putting his bicycle in his garage.
Contradiction: The man is doing push-ups.