Anchor: A band of two men playing guitars and two women are on stage.
Entailed: A musical event is going on.
Contradiction: The group of people are all scubadiving off the coast of Bermuda
Contradiction: A woman is walking into a store.
Contradiction: The sergeant did not notice the courageous act. 
Contradiction: We have developed a comprehensive national strategy that addresses all outlined elements.
Contradiction: Two black dogs are playing in the grass