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: I have tried various brands of stevia, but I always come back to NuNaturals.  I buy the 12 ounce container because I use it to sweeten everything.  If you have a sweet tooth as I do but don't need the added pounds, then this is the ticket for you.  I drink a lot of tea, and this is my sweetener.  A lot of other stevia brands leave a bitter after taste, but this is the best that I have found to resolve that problem.  Highly recommended.
Example Output: Positive

Example Input: These are great. We were told to stay away from wheat, barley and rye. This is a good answer for us. They a not pre-cut so you have to cut them in to. I recommend them.
Example Output: Positive

Example Input: I recently purchased the On the Go Yamamotoyama Sweetened Iced Green Tea and was floored!  I bought it at a store that is far from me.  I was told I could find this brand at Ralph's. But when I went I could only find the Raspberry flavored one.  It was absolutely horrible compared to the one I had earlier, which is easily a 5 star review.  It was just weird tasting.  I would stick to the regular one and flavor it later.  Wow big fail.
Example Output:
Negative