Anchor: Nathaniel Hawthorne is pretty scary himself
Entailed: Nathaniel Hawthorne is also quite scary.
Contradiction: Nathaniel Hawthorne is not an intimidating individual. 
Contradiction:  The Initial Regulatory Flexibility Analysis provided several significant alternatives. 
Contradiction: The surgeon is working.
Contradiction: Any area above the Texas border is a guaranteed spot of warmth.
Contradiction: Some men gather in a lobby.