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.

Ex Input:
I have purchased this product in the past through Amazon for my twins and it was good. However, the last time I ordered the 6-pack in June, the cereal was stale and smelly. I opened a few cans and they were all the same. I called Amazon customer service and they were very helpful and gave me a refund. I don't think I will purchase this item again through Amazon, although I do purchase the majority of items for my twins(including diapers) at a great price from them.

Ex Output:
Negative


Ex Input:
I have an otherwise healthy and active 1 year old Rottweiler.  I switched her from Blue Buffalo to Canidae, as it came highly recommended by the holistic pet store I frequent (they are going to be the next to get an earful from me!!!).  Shortly after, I noticed her stool became loose, which is common when you change a dog's diet (I mixed the new food with the old for a week, gradually increasing the amount of the new).  I figured it would get better after a few days.  In fact, it became increasingly worse to the point where spots of blood where showing up in her stool.  I took her to the vet thinking at this point she must have picked up a parasite.  The test came back negative.  My vet thought it must have been something she ate and recommended I feed her chicken and rice for a week to even her out.  I did this and the problem was solved.  After a week I put her back on her regular food- Canidae- and the problem she was having before began to return, albeit gradually.  We have now started to see spots of blood again.  This convinced me it was not just "something she picked up," but the dog food itself.  Now I have learned there is actually a CLASS ACTION SUIT against this dog food maker for the exact problem I described- in some cases people's dogs even died.  I will NEVER purchase this brand again and am switching my dog immediately back to Blue Buffalo- this time no mixing!!

Ex Output:
Negative


Ex Input:
I found this at Wholefoods for $2.50 and bought it mainly because of the cute bottle design. I had tried acai berry drinks before and aren't crazy about their flavor, and this doesn't change that. This product has a taste that reminds me of Chinese medicine. White tea is already by itself very subtle. The combination of white tea, lemonade, and acai juice just doesn't work together. I also found it overly sweetened (28g sugar in the bottle). One bottle is 140 calories.  In addition to white tea, acai juice, cane sugar and lemon juice, it has soy lecithin. It's a common food additive, but I'm not sure what it's doing in a tea. Maybe to keep the lemon and acai mixture from separating out. That's nothing a good shaking can't fix.  The bottle is too nice to throw out, so I'll reuse it for my own beverages. (The cap screws on.) Brewed and bottled in Chicago. I won't be buying this flavor again.

Ex Output:

Negative