You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Example Input: We have these suto delivered.  They are a great healthy sub for potato chips and the snack bags are a perfect size.  Great crunch and we enjoy all the flavors.
Example Output: Positive

Example Input: The rice flour in it is a crude gritty grade (cheap?). If you've ever used Thai rice flour <a href="http://www.amazon.com/gp/product/B000EYC096">Thai Rice Flour - 16 oz</a>, you know that rice flour does not need to be this unpleasantly gritty.  I tried compensating for the grit by using Bisquick Gluten Free to make Johnny cakes since the cornmeal is sort of gritty. But sadly, after you chew you are still left with this unpleasant grit like fine sand in your mouth.
Example Output: Negative

Example Input: I simply don't like it. It is easy to prepare, but when I eat it, I feel that i am eatting a lot of artificial ingredients. I cannot even finish one fourth of it.....
Example Output:
Negative