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 Q]: 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!
[EX A]: Positive

[EX Q]: I ordered an 8 pack of this jerkey to try and stay range grown and healthy in my eating, but when I got it, it was a disaster!  First, I only got one of the 8 packs I was paying for.  I can't fault this  jerky, but Amazon's shipping folk for that.  However, the bag had jerky in it that had a strange gray fungus growing on it!  I was told this was good jerkey, but I guess I'll never know now.  I may have gotten a very rare moldy pack, but I'll shy away from this stuff.
[EX A]: Negative

[EX Q]: I have been plagued by white flies for over a year. Neither chemical nor natural treatment has gotten rid of them completely. I decided to try this as it's made by a respected international brand & I thought a systemic product might work. A week after the first application there was no reduction in infestation but by the second week I started to notice less & less of the little vermin. By the time I was ready to do a third application there was not even one white fly or any other insect on any of my roses or any other shrub. I had even used it on potted plants which were also infested & it worked on everything. Remember, the product is systemic and is absorbed gradually into the plant so you will not see an immediate improvement but it works wonderfully.  Also if like me, you don't always remember to spray regularly or get the underneaths of the leaves, then something which you can sprinkle at the base of the plant every 6-8 weeks is certainly a lot easier to use.
[EX A]:
Positive