Not all motorcyclist is wearing a helmet.  Just because a motorcyclist drives up the side of a green mountain while another bike remains stationary does not mean another cyclist stayed behind because he didn't feel good.


Context: A motorcyclist drives up the side of a green mountain while another bike remains stationary.
Hypothesis: A motorcyclist wearing a helmet drove up the side of a green mountain while another cyclist stayed behind because he didn't feel good.

Given this context, is the hypothesis true (Yes/No/I don't know)?