Anchor: Two surfers are out in the ocean, and one wearing green and black catches a wave.
Entailed: Two people are surfing and one catches a wave.
Contradiction: Two people running down the beach.
Contradiction: Wal-Mart stocks adult videos nowadays, and it's a big hit worldwide.
Contradiction: How did Caltech land the top spot? 
Contradiction: The men are sleeping.
Contradiction: The lawyer paused, then continued talking.