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: So disappointed in this product. It was not as pictured. The picture shows a more square bag. The one I received was more slouchy. I purchased it to use for work for a laptop. Theres no way it would fit. I ended up donating this bag.
Example Output: negative

Example Input: I have a smallish black dog that disappears into shadows and night an this collar is perfect to help keep an eye on him. He is so small I was able to get two equal lengths out of the collar portion and I love that it is rechargeable.
Example Output: positive

Example Input: If you want to find out what a burnt toast shake taste like, order the cafe mocha. The only way I could down that flavor was with some instant coffee sprinkled in it to hide the burnt taste. On the other hand, the Cacao flavor is sublime. Seriously, order the cacao one.
Example Output:
positive