Anchor: A surfer in a black wetsuit catching a wave while another one tries to catch up with him.
Entailed: the surfers are on the water
Contradiction: the woman surfer surfed alone
Contradiction: No humans.
Contradiction: The people in safety vests are outside.
Contradiction: The implementation of the framework is the end, not the means.
Contradiction: We had a dog that gave birth to thirteen puppies.