Anchor: A man in a green shirt hailing a cab.
Entailed: Man is getting a cab
Contradiction: A man is driving his own car.
Contradiction: Auditors are free to assess each situation with complete flexibility. 
Contradiction: Wee have a TI computer, made for IBM.
Contradiction: The museum has an 800 year old burial vault.
Contradiction: A dog runs through a grassy yard.