Anchor: Some people walking by the water.
Entailed: People are walking by some water.
Contradiction: The people are playing in the pool.
Contradiction: a woman sailing a boat
Contradiction: Because of this, the ratio of mailed in payments to the number of bills received in the mail has gone down. 
Contradiction: I'm a good person because I'm not a Jewish doctor.
Contradiction: A woman stands close to the water.