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

Example Input: Steve Milloy, author of this book, is a Washington, DC, lobbyist who has represented just about every polluting industry imaginable, especially the tobacco industry. If you doubt this, read the book Trust Us, We're Experts! by Rampton and Stauber, who have pages on Milloy, CATO, American Council on Science and Health, and their PR campaigns to smear health and environmental concerns as 'junk science' waged by evil public interest groups and activists like Ralph Nader. Pure industry propaganda.
Example Output: Negative

Example Input: Product received timely. The plug in feature is favorable in that there is no concern of battery failure. Product is easy to use.
Example Output: Positive

Example Input: I thought the Cd would be good after hearing Tubthumping and Amnesia but I was wrong..I feel that other than Tubthumping and Amnesia, there isn't anything about this Cd to boast about...
Example Output:
Negative