Anchor: A man, with helmets on, is struggling to stay on the back of a bull in an enclosed area, as people look at them.
Entailed: A man is on a bull.
Contradiction: A man is riding a horse.
Contradiction: Good cooks are a dime a dozen.
Contradiction: I really enjoyed when Walter Cronkite was an anchor.
Contradiction: The library is open at all times.
Contradiction: A surfer is surfing.