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

Example Input: So it was long, and it was a slow read, big DEAL. Ms Lackey and cohorts have spun a gripping, involved tale of GREAT characters, involved PLOTTING and lots of FUN. I read for pleasure and this was a pleasure. I was always looking back to keep things straight, but it was FUN. I lost most of two nights sleep because I couldn't put it down. This team should write lots of sequels, and I WILL BUY THEM ALL.Be warned, if you pick up this book and start reading you will suffer. Yours friends and family will think you have run away, and you have, To Venice, where you can spend a ripping vacation in you mind. The lady has won me back.
Example Output: Positive

Example Input: I've been a longtime fan of Mercedes and own most of her Valdemar series. So, of course, I picked this book up at my local store. After wrestling through 50 pages, I gave up! I plan to sell it back to my local store ASAP- this is nothing better than a paperweight in my bookshelves. The worst part is, my boyfriend picked it up and tried reading it. Now he thinks that this is a good example of her work!
Example Output: Negative

Example Input: There is no excuse for the CD to be made. I thought when it was first announced it would be HIGHLIGHTS from the box set and a couple other songs they didn't put on the box. This CD is overburdened with scraps, there were great (full) songs on With The Lights Out, but only a couple of them show up here. Once again, the Cobain estate is going to try to sap us as much as possible until they give us a complete rareties, compilation and b-side tracks set. Buy the box set and make your own compilation.
Example Output:
Negative