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 thought the impeller was broken so I purchased a new one and unfortunately learned that it is the filter itself that is no longer able to pump water. I bought this a month ago. My turtles are not happy.
Example Output: negative

Example Input: Plugged this into my Gear 360 camera, which handles 128 sandisk with no issues, this one shuts off after one minute, says the card is full and is buggy as hell- I would not order anything from this company, this is obviously a generic card with less than 2 megs of real space. I trusted their feedback ratings but got screwed. For 3.00 more I could have bought a sandisk and not had any issues, really upset.
Example Output: negative

Example Input: Love this bottle!! The bottle itself is durable and the shape is nice. The way it tracks how much water you drink is awesome! The app that goes with it is wonderful and reminds me when I should drink / how far from my daily goal I am. It has helped me a lot! As dorky as it sounds, it makes drinking water kind of fun lol Also: the customer service is great!!!
Example Output:
positive