premise: The man in a white shirt had a flat tire on the back of his bike, and he was repairing it before he could take off again while his friend waited. hypothesis: The bike can not be ridden.
entailment: If a bike has a flat tire, and the owner is repairing it while a friend waits, then it follows that the bike cannot be ridden because otherwise the biker would not repair it right away and inconvenience the friend.