Anchor: A worker using a broom to clean the ground.
Entailed: The ground is being cleaned by a broom.
Contradiction: A worker uses a vacuum cleaner to clean the ground.
Contradiction: He backed away and said nothing to her.
Contradiction: A man is playing tennis.
Contradiction: A person is riding a skateboard.
Contradiction: Giuseppe Garibaldi was a political insurgent who had fled to Piedmont.