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

This is an excellent water flosser, and a great value. This flosser is just as powerful as their countertop unit, but takes less space and is more attractive. It is easy to fill and comfortable to use. I flossed 3 times a day for 4 days on a single charge. It comes with a handy travel bag also. H2ofloss makes a quality product at a reasonable price.
Output:
positive