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

Example Input: This CD is great for some people, but I think a lot of other people are buying it who maybe shouldn't.For the Nirvana fanatic with money, get the full boxed set, you will probably find the DVD and the book to be worth the extra money, even if you don't listen to the added tracks.If you aren't a fanatic, stick with the albums. You will not like the low sound quality of the recordings.Now, for the Nirvana fanatic who's a bit short on cash, but absolutely has to have "Do Re Mi" as part of his collection, that's who this is for. "Do Re Mi" is an excellent track, one of Nirvana's best...so if you are a serious Nirvana fan, you DO need to have that one.
Example Output: Positive

Example Input: I've read several other Deborah Smith books. In my opinion Blue Willow was the best. Sweet Hush was by far the corniest book, I've read in a long time. The phrase "Sweet Hush" must have been at used at least 100 times in the book. The main character "Hush" was predictable and one dimentional. If you enjoy Deborah Smith books, I would skip this one.
Example Output: Negative

Example Input: It's good price and works as expect. After a month of use it still going strong. The plug is sung. It keeps the headphone attached firmly.
Example Output:
Positive