Anchor: A man is working on a piece of furniture with a power tool.
Entailed: The man is using a power tool.
Contradiction: The man is building a treehouse with a hammer.
Contradiction: The kids are sleeping after a long day.
Contradiction: There is more than one Mundell to choose from.
Contradiction: It is not possible to go any slower. 
Contradiction: Two men are playing frisbee.