Anchor: A swimmer is doing the backstroke in the swimming pool.
Entailed:  A swimmer backstrokes in the swimming pool.
Contradiction: A girl is sitting on the beach.
Contradiction: All auditors had to follow the standards in standards chapter 6 unless they received written permission to alter the audit directives.   
Contradiction: The person is trying to learn how to do something.
Contradiction: From the one nearest him on the right came a huge scream.
Contradiction: A man and woman are looking a laundry