Anchor: It might have been minutes or hours that he slept, and he had no way of knowing which.
Entailed: He didn't have a way of knowing whether he had slept minutes or hours.
Contradiction: He knew that he had slept for five hours.
Contradiction: It was imposed by Congress under a 1941 law.
Contradiction: a man looks through a telescope by the sea
Contradiction: The hockey players are in the desert.
Contradiction: A dog is in the puddle.