Anchor: yeah patent it that's a good idea
Entailed: A patent is a good idea.
Contradiction: I do not think you should waste time trying to get a patent.
Contradiction: Two kids playing frisbee at the playground.
Contradiction: The erupting storm seemed to be an omen regarding the forthcoming climate. 
Contradiction: The dog fell into the pond.
Contradiction: She is afraid that he co-workers would report on her to the tabloids.