Anchor: You don't have to do this.
Entailed: It's not required of you.
Contradiction: This is something you have to do. 
Contradiction: He quickly came to a conclusion about that point.
Contradiction: The giant of a man stepped forward and swung his giant ax at the man, who ducked out of the way.
Contradiction: A woman eats alone at a deli.
Contradiction: Two men with fishing gear.