Anchor: If you are convinced he did it," said Poirot quietly. 
Entailed: He might have done it. 
Contradiction: Poirot was speaking loudly. 
Contradiction: The person is wearing a pink tee-shirt.
Contradiction: Man in dirty clothes and a mask.
Contradiction: You face can't be modified by the moon.
Contradiction: Anyone who can detect good quotes should find one in Hatfield's book.