This talk is a sequel to my colloquium talk, given earlier in the day.   My main objective is to introduce the geometric Weil representation which is an algebra-geometric (l-adic Weil sheaf) counterpart of the Weil representation. Then, I will explain how the geometric Weil representation is used to prove to main result stated in my colloquium talk. In the course, I will explain Grothendieck's geometrization procedure by which sets are replaced by algebraic varieties and functions by sheaf theoretic objects.