Anchor: The hammer he swung must have weighed fifteen stones.
Entailed: He swung the hammer, despite the fact it weighed about 15 stones.
Contradiction: The hammer was very lightweight, so he swung it.
Contradiction: A woman breaks a bottle in the street.
Contradiction: a person is waiting.
Contradiction: The man is inside.
Contradiction: A young boy is leaping into the water.