Anchor: Mr. Poirot, here, will show me the way." As they all went out of the room, Poirot turned and made me a sign to follow him upstairs. 
Entailed: There is more than one level in the building that Poirot is in.
Contradiction: They all stayed in the room and Poirot told me to stay where I was.
Contradiction: I didn't speak.
Contradiction: Two dogs running on the beach.
Contradiction: The Engineers are working in a garden.
Contradiction: I had been employed for nine months and was going to work when they were coming home.