Anchor: He had no idea it was so bad.
Entailed: He didn't know that it was so bad. 
Contradiction: He knew how terrible it was.
Contradiction: It's 80 degrees outside.
Contradiction: He has screwed and saved.
Contradiction: A woman is in her underground home knitting.
Contradiction: You can eat snacks in many of them, or even find a full meal at a low price.