Anchor: Here a group of some fifty men were watching the sky, obviously waiting.
Entailed: At this place, fifty-odd men were looking at the sky and waiting.
Contradiction: A group of some fifty men were talking and laughing inside the great hall, oblivious to the sky outside.
Contradiction: He went in an out at least a hundred times.
Contradiction: Have you considered visiting Louisiana?
Contradiction: They use random groups.
Contradiction: The three of them did the most.