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

Example Input: This book was brand new when I received it. However, it did not arrive for 20 days after I ordered it.
Example Output: Negative

Example Input: I had almost all of the Jean Auel's books and needed this one to complete my collection. It turned out to be a book club size and I traded it to a friend for the full size version.
Example Output: Positive

Example Input: Saw Barbra in Atlanta and this is a wonderful album to bring back the memory of an unforgettable experience! I just hope there is a DVD planned!
Example Output:
Positive