Anchor: A child swims underwater in a pool.
Entailed: there is a child in a pool.
Contradiction: there is a child drowning.
Contradiction: I got into this because I found it appealing, it was hard though since I didn't know anyone else into it. 
Contradiction: A fat man is struggling with his umbrella.
Contradiction: the seahorses are racing around an underwater track
Contradiction: It hurt things when prayer was taken out of school.