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 didn't have a bottom rail on my rifle so I needed to go get a bipod mount. After that it was easy. Would be nice if it had the option to get a rail mount piece or a bipod mount piece through the order. But I love them, they are strong and easy to put on and use.
Example Output: positive

Example Input: This small vacuum cleaner is really powerful enough to clean the dirt / food particles in car. Cleans well even in the small gaps between seats. The long pipe accessory makes it easy to clean below seats. This works well even without the car engine off in my crossover. And the long cable helps clean inside as well as outside the car. The filter is easy to remove and clean. A must have item.
Example Output: positive

Example Input: This is a very easy-to-use timer, the big numbers are great and I can hear it go off quite a distance away! I use it a lot when I'm using my PC because time just seems to disappear when I'm back in the office working on it! The magnetic back is nice so that I can put it on my fridge.
Example Output:
positive