Anchor: He says: "Find the extra coffee-cup, and you can rest in peace!" ' Nothing more. 
Entailed: The extra coffee cup was an important clue that had to be found. 
Contradiction: Poirot told them to find the extra dinner plate.
Contradiction: There's a wall which we can use as a natural choke point.
Contradiction: Critics said his ambivalence on Russia was great.
Contradiction: The woman is unable to defend herself.
Contradiction: The man is on the street.