Anchor: Two curiosities exist in this area, both underground.
Entailed: Both of the curiosities that are to be found in this area are located underground.
Contradiction: There are no curiosities to be found in this area. 
Contradiction: If I don't find anything, I will be happy.
Contradiction: Two people sit on a bench while watching a tennis match.
Contradiction: A group of boys playing ball.
Contradiction: The Salmon Corporation was never calm.