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: 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 was dissapointed to see this box when it arrived - right away you could tell from the wet box that the creamers had burst in transit. Half of them were burst open, leaving the rest covered in a sticky mess. I live in Colorado so perhaps it was due to the altitude in shipping but VERY dissapointing. Worth the extra $$ to buy them at a local store so you know they are in good condition.
Example Output: Negative

Example Input: These chips are some of the best I've tasted. They are not filled with chemicals. You taste the tangy vinegar as well as the potato. Not greasy. Perfectly crispy. If you don't like salt and vinegar tanginess, don't even bother to try. These definitely have zip. I love them. My children and their friends love them. Even my 4 year old loves them!
Example Output:
Positive