You will be given a definition of a task first, then some input of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Purchased these boots on Amazon two weeks ago. They were delivered in about 3 days and the fit was perfect. I have found them to be lightweight and very comfortable. And most important to me, since we get lots of snow, the boots keep my feet warm and dry. These boots delivered!
Output:
Positive