The actions performed by the man are in contradiction. He is either doing a trick (an ollie) on a skateboard or riding a bike, but certainly not both at the same time.


Context: A man in a hoodie does an ollie on his skateboard with people in the park in the background.
Hypothesis: The man is riding his bike down the fast lane.

Given this context, determine if the hypothesis is true (Yes, no, or unknown)?