Anchor: But perhaps one of Mrs. Inglethorp's keys would open it." He tried several, twisting and turning them with a practiced hand, and finally uttering an ejaculation of satisfaction. 
Entailed: Mrs. Inglethorp's keyring held the correct key to open it.
Contradiction: None of the keys would open it. 
Contradiction: A woman is taking a bath.
Contradiction: He said that they had obtained some testosterone from a small, blond humanoid creature.
Contradiction: A yachting team sails through the harbor
Contradiction: There is a C-R relationship between a pollutant and a health endpoint.