Anchor: Well, said Mary, "I expect he will be back before dinner." But night fell, and Poirot had not returned. 
Entailed: Mary thought Poirot won't be gone for too long and will be back home soon, but she was wrong. 
Contradiction: Mary understood that Poirot would be taking a while because of errands he had to do. 
Contradiction: the girl is asleep
Contradiction: The dog is spending time with his owner.
Contradiction: These people are studying in a library.
Contradiction: Man showing things to people.