Anchor: He sat down in one of the big arm-chairs facing the couch.
Entailed: He sat down in a chair that faced the couch.
Contradiction: He sat down on the couch that faced a chair. 
Contradiction: The screenings need no evaluation 
Contradiction: Do you have the key that goes into this door?
Contradiction: The little girl is made out of rocks.
Contradiction: a person is hanging.