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'm a big black tea drinker and have tried a lot of different brands out there, and I find that PG makes the best black tea. It's nice and strong, not like crappy Lipton black tea. We've been loyal to the PG brand black tea for over a year now - it's a little pricier than other brands, but definitely worth it if you enjoy black tea.
Example Output: Positive

Example Input: Please be aware that although dogs absolutely LOVE these treats, that they may have caused a recent unexplainable illness in our 9 month old Mastiff pup. He was getting 1 or 2 a day of these chicken jerky's for about a week and then suddenly became very lethargic, along with vomiting, diarrhea, and had no appetite "except" he would eat only these treats and drink water. Vet thinks he'll recover OK, but advised us to stop feeding them to our dogs. These are still "Made in China" and in 2007 reports had shown that dogs were getting sick from these and other brands, and there are still reported cases today. Just be careful and watch your pets closely if you are feeding them these. We will no longer feed these to any of our dogs, ever. Wish Dogswell would manufacturer these in the USA again.
Example Output: Negative

Example Input: I purchased this tea for my neighbor as a present, she has been looking for sassafras tea for a long time, I didn't realize it was so hard to find!  She absolutely loves it, made a great surprise christmas gift.
Example Output:
Positive