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: grandfather thought he would like the open to but says they tend to roll up on him and become uncomfortable so be sure to try closed toe first. the quality was fine just a personal comfort issue.
Example Output: positive

Example Input: I bought this for a friend who planned to travel outside the country. I told her it was to wear in case she was robbed--in the event a loss but not a GREAT loss. It is so pretty she was worried it would invite a robbery! (She wasn't robbed but really enjoyed wearing it.)
Example Output: positive

Example Input: It's a really pretty cover and the fact that they showed what each color phone looked like under the design really helped me choose the perfect cover. It's textured on back, so it helps grip the phone and I'm very pleased with it.
Example Output:
positive