Anchor: A written guarantee that a system or componentcomplies with its specified requirements and is acceptable for operational use.
Entailed: A written page showing the system/component is acceptable for use and complies with requirements.
Contradiction: There is no written guarantee at all for the system or component.
Contradiction: I checked my coat, and there was nothing in it. 
Contradiction: Diana wrote letters to her lover, James, but they were stolen.
Contradiction: Two skiers reach the bottom of the mountain.
Contradiction: A person is walking a dog, while a kid rides a skateboard.