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: We were very disappointed with this product and plan to return it. Neither of us is a train hobbyist; we purchased this to put on a table top around a small Christmas tree. Parts were broken, misaligned, and did not easily 'push' together. The notes below detail these issues. 1. One of the linkage bars on the train engine was not attached to the main drive wheel and just flopped around. Since the bar wasn't necessary I decided to tape it to the side of the engine and see how the train operated. 2. The coupler height between the coal tender and the passenger cars was mismatched to the point that the car would become disconnected whenever the train would go into a curve. I tried each car but they were all the same. 3. The track didn't just 'snap' together. It was necessary to slightly wiggle and twist the track when pushing it together so the small metal clips engaged with the metal part of the track. In several cased I had to use the tip of a knife to lift the metal clip up into place while pushing everything together.
Example Output: negative

Example Input: I really like these things for scrubbing water stains on sinks and toilets. They do wear down fairly quickly so having four around is not a bad idea and is defiantly cheaper then ordering them one by one.
Example Output: positive

Example Input: So pretty and bright. Placed them around a small potted tree on our patio. Surprised at how much light they put out. May order another set. Just make sure you power them up fully in the sun before using.
Example Output:
positive