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: This toy is not that great for my pug. He loves finding stuff in the little cups, however the yellow covers are impossible for him to get off. His mouth won't fit around them so he can't pick them up with his teeth, when he uses his nose to try to get at them the cups just fall back into place and if he uses his paws (that's when he's really frustrated) he winds up just flipping the whole thing over. I have turned the cups upside down so that he can grab at the edges and that works for him. However, it's not really a puzzle because he even figured out that if the cup is sticking up, something is in there. I even have a hard time getting some of the cups out because of the way it is shaped. It's not a bad toy as a starter puzzle but if your dog has done puzzles before, this one won't keep him interested. And if you have a dog with no snout, it's not really worth it.
Example Output: Negative

Example Input: Our family has liked every other flavored we have tried (BBQ is the best). We like sweet potatoes so we assumed would like these pop chips.  I was wrong, no one in the family likes the sweet potato pops chips.  I highly recommend you go to a store that sells the sweet potato before deciding on purchasing a large quantity.
Example Output: Negative

Example Input: I grew up on Yunnan tea as a child - it was always my mother's favorite - so I was happy to find an economical source of it of a quality that was great for a "large volume" habitual tea drinker like me. This tea is my daily regular tea. Yunnan is nice in that it will brew dark so you do not need much at a time. It's aromatic and flavorful without any additives. If you want something that is flowery yet more subtle than Earl Grey this Yunnan or a Keemun may be a nice option to explore.
Example Output:
Positive