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

Ex Input:
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 Output:
Negative

Ex Input:
I have not read any of Charlie Smith's other work, so I can't compare this to previous efforts. His writing is poetic, and truly impressive in short bursts. But over the long haul, the poetry interferes with the prose. Words and phrases seem to be chosen more for their sounds and rhythms than for their contributions to plot, and dialogue can be stilted. Imagery is vivid but occasionally self-indulgent. The storyline is interesting at first but eventually grows gaudy and distasteful. The power of Smith's language is his greatest strength, but it is a strength better suited to poetry than novels.

Ex Output:
Negative

Ex Input:
Well, I might have agreed with the other reviewers if I hadn't ordered "Strength Ball Training" by Goldenberg and Twist at the same time. This book seems very amateurish by today's standards. It's a thin paperback with hand-drawn sketches. Maybe this was considered okay back in 1991, but this is 2008. SBT gives you all of the exercises in this book plus many more, updated with recent training science background, illustrated with photographs of actual people, plus a DVD with videos illustrating many of the exercises! And it's the same price! Come on, get into this century. Amateur productions like this one just don't cut it anymore.

Ex Output:
Negative