Anchor: A black dog chasing a brown one.
Entailed: An animal is chasing another animal.
Contradiction: A brown dog is chasing a black one.
Contradiction: Encryption does nothing to ensure confidentiality. 
Contradiction: It is accurate.
Contradiction: I am completely understandable of why you didn't tell me when you got the other dog.
Contradiction: Affordability is one of the aspects of energy America will need.