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 made cupcakes with the vanilla cake mix.  They were just ok.  They were dense, but not overly so.  So that wasn't too bad. The flavor, however, is where I was disappointed.  The vanilla flavor was so subtle that I missed it entirely, and I felt like there needed to be a little more sweetness (which probably would have also made them a bit more moist). The child I made them for only ate a few bites.
Example Output: Negative

Example Input: I adopted my dog about 6 months ago and he had digestive problems that the vet could find no cause for. He would get diarrhea with mucous in stools regularly. His stools would vary from constipated to unformed soft stool. I decided to switch him to a better quality food and did a lot of research. Newman's Own had all the qualities I was looking for, so I switched him to it gradually - 1/2 Purina One and 1/2 Newman's Own at first and gradually more Newmans' Own in the mix until finally 100% N.O. Ever since switching about six weeks ago, he has not had constipation or loose stools. I also don't hear his tummy roiling after meals like before. And despite what a few reviewers have written, the chicken and beef used in the pet food, while not "organic", is "natural" and raised without hormones and antibiotics.  According to [...] ingredients list: "Natural Chicken - Raised without growth hormones and antibiotics and fed only a 100% natural, all-vegetable diet, the chicken meat provides amino acids essential for muscles, hormones, enzymes, antibodies and structural and protective tissues." Also, the beef is free-range anad range fed w/ no hormones & antibiotics.  For me the evidence is clear - this is good quality food, my dog loves it and I love that when I buy Newman's Own products, the royalties go to charity!
Example Output: Positive

Example Input: I am not happy about writing this review. I had very high expectations from both the name and the high praise given by the other reviewers. I was at once concerned, however, based on the weak aroma at first opening. And, these initial concerns were confirmed at first use... little flavor here. I have found a home recipe based off of the ingredient list with stuff from my spice rack produces a much better result.  Beef Rub: Brown sugar, sea salt, paprika, chille, rosemary, fresh garlic, chipotle powder, cumin, and McCormick Montreal Steak Seasoning.  Chicken Rub: Brown sugar, paprika, sea salt, chille, McCormick Montreal Chicken Seasoning, curry, garlic, cinnamon, and Chinese Five Spices.
Example Output:
Negative