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

Example Input: I love my Zen Xtra 40GB - well at least I loved my Xtra. The player is great, except for one major detail - the shoddy quality of the headphone jack. IT WILL FAIL! If you get lucky it will still be under warranty. If you aren't expect to pay at least $40 for the clowns at Creative to fix it. If you think I am just flaming them, check out their forums.
Example Output: Negative

Example Input: I've bought this book, underlined every hint of symbolism, found all evidence of romanticism, followed every quote involving thematic oppositions, and noted every example of Pearl's rebellious nature and social alienation, but I cannot find one positive aspect of this novel that makes any of my hard work feel rewarding. The only way this novel could give me a warm feeling is if I place it in a furnace.
Example Output: Negative

Example Input: it took a month to get the book in spite of numerous emails and no feedback about the urgency. I finished the summer school without the book.Don't buy anything from this seller.
Example Output:
Negative