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 first tried Britt dark roast when I was In Costa Rica.  It has a lot of rich flavor, but it is not bitter at all.  I've bought it by the case ever since.  It's really no more expensive than those "gourmet" brands you find at your local store.  This is simply the best coffee I've ever had, and I've tried many supposedly special ones over the years.
[EX A]: Positive

[EX Q]: This is the second "Tug-a-Jug" food puzzle I've purchased for my wire fox terrier. The first lasted about five months until she chewed through the rope. But this toy kept my dog more occupied than any other food puzzle I've tried, so I decided to purchase a second one. My plan was to put this one away as soon as my dog was done with her food so she wouldn't "play" with it and chew through the rope. So in other words, I blame my dog's destructive terrier prowess on the demise of the first toy rather than the manufacturer.  But after just one week of use for the second toy, the bottom part where the end seals onto the main container literally cracked and shattered into many pieces when I was sealing the toy.  My dog may chew through ropes but she's not that rough with toys, and I was using normal strength to twist the end piece on, so I'm pretty sure this one was a dud. But after that, I'm totally done with this company. The shards that came off in my hand were tiny and sharp enough that if just one shard had broken off without my notice and go mixed in with my dog's food, she probably would have ingested it and had internal bleeding.
[EX A]: Negative

[EX Q]: If there is one thing our dog likes, it is the liver biscotti dog treats.  These make the best rewards and training treats we have used.
[EX A]:
Positive