Anchor: Two men on horses at a rodeo getting ready to catch a young calve.
Entailed: Two men are riding animals.
Contradiction: Two men are at a circus.
Contradiction: I don't think there's wage discrimination even if women are making more than men do. 
Contradiction: A large retired population consumes more and works less.
Contradiction: The man never learned to ride a bike.
Contradiction: On the island, there is both farmland and a forest of pines.