Anchor: A man wearing a helmet and safety suit goes uphill over rocks on a dirt bike.
Entailed: A man is riding a bike
Contradiction: The man isn't wearing a helmet
Contradiction: You cannot see the city from the Lookout Tower
Contradiction: Case studies have began early as possible.
Contradiction: Casa de la Trova is not in Cuba.
Contradiction: He had nothing to give in support of himself except for his opinion of her.