Anchor: A man is listening to music on his iPod as he runs in a race along a river.
Entailed: A man listens to his electronic device.
Contradiction: A man is using his laptop as he runs in a race.
Contradiction: The boys are playing soccer
Contradiction: Two people are drinking wine.
Contradiction: A person rides a snowmobile three miles to town after the huge storm hits.
Contradiction: Patients that wind up positive for one risk factor also usually have multiple other risk factors.