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: Our cocker spaniel is now nearly 10 years old, and the solid gold food I'd been feeding him suddenly changed its formulation over a year ago(with no notice on the packaging), and he became subject to unexplained stomach upsets. After the contaminated food scare even tho Solid Gold was not recalled, I decided to switch, and this formulation is perfect for him to not gain too much weight. Newman's own is a brand I totally trust and have bought snacks for my human baby as well for years. After a year on this food, my dog is doing fine, but I do notice a need to supplement with fish oil for a healthier coat. That may be age related as well. But the stomach upsets have stopped. And I feel better knowing I am not exposing him to additional pesticides and hormones by going mostly organic with this formula.
Example Output: Positive

Example Input: Pop Secret is by far my favorite popcorn and I eat about 2 bags a day. I normally get the homestyle, but is was always to dry when I ordered on line so I went to the Butter thinking it wouldn't be so dry. No such luck. When I buy from the grocery store it is much more flavorable and fresh and it doesn't cost that much more. I checked the dates and the store vs online bulk was about 6 months different on average which probably causes the difference even though they both are in the sale by date range. with this said, I am going to have to discontinue buying this product online unless something changes and I'll really miss it coming straight to my door since I eat so much. I waited for 3 months of getting this product before posting because any company can have a bad batch of anything. Sorry. I hope this changes in the future!!
Example Output: Negative

Example Input: This is the BEST! Years ago, I used it & loved it! Moved & could not find it again. I have purchased many hot/sweet sauces over the years, trying to find this flavor. Recently, I found it again at World Market....now I'm addicted! Everyone has mentioned great ways to use it. My favorite....I use it on my salads, along with a little fat-free dressing. Now, I eat tasty salads every day, (without the cheese!). Sodium is 200 mg per tablespoon....and the amount of added flavor is worth every mg!
Example Output:
Positive