In this task, 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: I really like Pippa's writing. This sci-fi slash fantasy combination has me hooked. Cannot wait til the third book is released. Plot keeps you guessing about what challenge will come next, and how will the character grow with it. Please keep this series coming...quickly preferred. ;-)
Example Output: positive

Example Input: We bought two of these.This product. Does not fit 128 disk. The folders are so tight against the edge once you start filling it. It becomes impossible to out disk in towards the back of the case. Will be looking for somwthing decent.
Example Output: negative

Example Input: Nice and snug without having to stretch too tight. They work really well and keep the sun and heat off my kids when they're in the back of the car. It's also nice to still be able to put the windows down knowing nothings going to fly in. These also prevent the wind rushing in when the windows are open but still allow air in.
Example Output:
positive