Anchor: A man standing on the street watching traffic.
Entailed: There is traffic on the street.
Contradiction: A dog chasing his tail.
Contradiction: A socially valuable service is over-supplied.
Contradiction: This study is about Particulate Air Pollution as a Predictor of Mortality.
Contradiction: The man is a clown that is in full make-up and costume, preparing to entertain a birthday party.
Contradiction: That is the real test.