I think the clause after the comma is dependent on the clause before the comma because it derives its meaning from it.
Logically, that can't be so.
If you are puzzled, don't know and are curious as to the reason behind the lottery, then 'the reason behind it' cannot be the fact that is determining your reluctance.
I'm still curious as to the reason behind this lottery. I know, I sure wouldn't want to play!
Student or Learner