Anchor: Dancers dressed in plaid skirts are practicing in front of the dance instructor.
Entailed: The dance instructer is watching the dancers.
Contradiction: The instructor did not show up for the practice.
Contradiction: He helped no one, and gave up nothing.
Contradiction: A little boy shows off a toy.
Contradiction: Communism is a great system, and I'm certain there will be a revolution.
Contradiction: The dog has collected a bird.