Leo: Given the sentence "Crowd watching airplane and helicopter in the sky." is it true that "A crowd is watching a copter and plane for a 4th of july event."?
Mei: OK, So, let's think first...
Me:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
A plan and a helicopter do not imply it is a 4th of july event.
Thus, the answer is it is not possible to tell.