Anchor: On completion, you will be allowed to dive with an instructor to a depth of 18 m (60 ft).
Entailed: When done you can dive with an instructor 60 feet deep.
Contradiction: You won't be able to dive at all, its too dangerous. 
Contradiction: The man stood on the bags.
Contradiction: the surfer is in the ocean
Contradiction: A couple of dogs sitting around enjoying the sun.
Contradiction: The Commission's notice deferred consideration of the NSA proposal.