I'll give you a question, please answer with step-by-step reasoning process.
Given the sentence "The backs of the heads of two men that are plugging their ears while riding the subway." can we conclude that "The two men riding the subway are coworkers."?\nOptions:\n- yes\n- it is not possible to tell\n- no

it is not possible to tell
Riding the subway together does not imply two men are coworkers.

.

Thus, the answer is it is not possible to tell