In an extremely obvious way. But most of the questions do not set up anything, you need some mystery but this movie just shows you so many things and you are left wondering what the point of it all was.
Handled correctly, ambiguity in film makes a statement. From what I have gathered from reviews, the ambiguity here owes more to what was left on the cutting room floor. I may see it if my budget permits, but since I have only seen the very first one (life got in the way of seeing the rest), I won't feel I am missing something if I don't see it.