It has discriminant  (and this polynomial can be used to define a global model ). It can be foundthrough the following procedure. First, we find some obvious torsion points by plugging in some numbers, which areIn addition, after trying some smaller pairs of integers, we find  is a point which is not obviously torsion.
This passage discusses the process of finding a global model using a specific polynomial, which is determined by identifying torsion points. The text describes how this process involves finding both obvious and less obvious torsion points.