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

Example Input: I really enjoyed this book!I couldn't put it down after the first page which compares Marshall, "An average North American Male" ... "plump and balding", to his caged pet bird - "Both had lived three fourths of their expected life span and had another fourth of life to go, if they were lucky".This sets the tone for the novel which is a thought provoking story written with wit and intelligence.I should note, however, this is not and it is a book about the character Marshall Hollenzer. It is really a book about people - the choices they make and/or the fate bestowed upon them - and journeys - both physical and spiritual.This novel is thought provoking, entertaining, and enlightening.I recommend buying at least two copies - this is the type of book that you will want to share with people you know.
Example Output: Positive

Example Input: When I heard their first album, leitmotif, I was blown away (something that only ocassionally happens). A fascinating album, combining various instrumentals with well placed vocals. so some time went by and eventually I bought the follow up, el ceilo (sp), and to say the least it was really damn disappointing. songs were too structured, ambiant sounds were predictable and not-interesting. and the lyrics SUCKED. i was really bummed. but then I saw a new album comming out. alright, perhaps they learned from mistakes, perhaps every song won't sound over-produced and catchy. instead, it only got worse. if you had never heard this band before, "catch without arms" will probably sound alright. but if you knew how good they were on leifmotif, don't buy this. i feel like i wasted my money (and i rarely feel that way about music). dredg has lost whatever it was they had. they are just mediocre. a real tragedy
Example Output: Negative

Example Input: I couldn't. The quality of this DVD is horrible! It was like watching an old old old VHS tape. I'm not surprised it was so cheap but I'm shocked that it was rated 4 and a half stars when I bought it. I was taken for a ride and it wasn't on the back of a horse.
Example Output:
Negative