Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: This corkscrew is poorly made, consisting of low-grade stampings and flimsy plastic molded parts assembled with tinned rivets. It feels like it's going to come apart in your hand, and it requires considerable care to use it safely and effectively. It's outrageously overpriced, too. An unfortunate product offering from the company that brought us the legendary original Screwpull, perhaps the handiest corkscrew ever.I did manage to pull a cork with it, though - which is why it gets even two stars.
[EX A]: Negative

[EX Q]: I purchased this MP3 player as a Christmas gift for our daughter only to find out on Christmas Day that is not compatible without our computer despite every update available. While we could see the preloaded video and it is very clear and bright, we were never able to upload any music. My husband (who is computer wizard) spent 12 hours trying to get this thing to work, but without any success. Next time we'll buy an IPod.
[EX A]: Negative

[EX Q]: Investigators like John Keel don't seem to exist anymore, so get this book while it's still in print for an honest approach toward unexplained phenemenon. It will probably never be able to compete with the books that assure us we are being visited by ET's, angels/demons and/or ancient deities. People want something to believe in. "Belief is the enemy",warns Keel. How many paranormal researchers do you know would say that? We are goldfish in a fishbowl being watched over and toyed with, but by What? This is the question Keel will leave you with and that will keep you staring wide eyed up at the ceiling late at night in bed...
[EX A]:
Positive