You will be given a definition of a task first, then some input of the 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.

These are my favorite gluten-free dairy-free flavored chips. Many other salt and vinegar chips contain dairy so it's nice to find ones that I can eat. The vinegar flavor is really intense and good.
Output:
Positive