Anchor: They try to swallow a dozen grapes while the clock atop the building strikes 12, after which pandemonium breaks out.
Entailed: Pandemonium breaks out after the clock atop the building strikes 12.
Contradiction: There is no clock at the top of the building.
Contradiction: The girl is trying to eat as many hamburgers as possible in ten minutes.
Contradiction: A consolidated financial statement must be provided.
Contradiction: The cost was cheap. 
Contradiction: There is a man with a pack.