If he is wrapping a shirt over his head, that is a shirt turban. if he is holding up a mobile device, it follows that he is looking for a signal.


Context: A man wrapping a gray collared shirt over his head while a friend holds up a mobile device.
Hypothesis: A man is wearing a shirt turban and his friend is looking for signal.

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