Leo: Given the sentence "A man in a suit and red tie gestures with his hands." is it true that "A man in a suit is gesturing at a meeting."?
Mei: OK, So, let's think first...
Me:
People talk with their hands. Just because the man is just during while talking does not mean that he is at a meeting of some kind. He could be having a simple conversation.
Thus, the answer is it is not possible to tell.