Given the sentence "A man in a hard hat and orange safety vest stands near a wall holding a tray while a man in a blue hard hat watches." is it true that "Construction workers are waiting for the all clear to start work."?
Please answer the following question by reasoning step-by-step.
it is not possible to tell
Not all man in a hard hat and orange safety vest is construction workers.

.

So, the final answer is it is not possible to tell