Anchor: A skilled surfer rides a very large wave;
Entailed: A surfer is using a surfboard.
Contradiction: The surfer is sitting in the sand.
Contradiction: I was so disappointed when I found out they did it I said nothing.
Contradiction: Tuppence reminded him of the time he asked her to marry him.
Contradiction: a group of men run through the grass.
Contradiction: Two person  are watching a monitor screen outside in a city street.