Leo: 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."?
Mei: OK, So, let's think first...
Me:
User
Not all man in a hard hat and orange safety vest is construction workers.
Thus, the answer is it is not possible to tell.
Assistant