premise: A paved trail being used by a man in a safety vest and bike helmet riding a Segway scooter and a woman wearing a bike helmet on a red bike. hypothesis: A dirt trail being used by a man in a safety vest and bike helmet riding a scooter and a woman wearing a bike helmet on a red bike.
contradiction: The trail is paved and can't be dirt too, and he can't be on both a Segway and a scooter.