Anchor: It was a nightmare sky, an impossible sky.
Entailed: The sky was frightening and foreboding.
Contradiction: It was a bright blue, friendly sky.
Contradiction: The air raid by 130 B29s failed and 100,000 inhabitants survived.
Contradiction: A cat sits in the woods
Contradiction: The quotation by Kerouac states that he is racist. 
Contradiction: She didn't know how to control herself.