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

Ex Input:
The book covers several generations, so with each generation you have to re-learn all the characters. It is difficult to keep track of who's who when every time you get to know the cast, 200 years suddenly pass and we're in the middle of a new crisis. I didn't read the whole series because of this -- it was obnoxious.

Ex Output:
Negative


Ex Input:
Who would buy it not knowing what is on it, is there any new material, is there a better version of music than previously released, how many, etc., etc. You've got to tell us something - give us a reason to buy it - give us a few short pieces to listen too! King indeed; he's pretty good but the King has been dead awhile (notwithstanding the occasional phantom sighting) and the remaining living creators of original rock and roll - Jerry Lee Lewis and Chuck Berry are very much alive and touring and in Jerry Lee's case still recording great music.I'll take a look at buying this if I can see and hear what it is!Jimp.s. sorry for the 1 star but ...

Ex Output:
Negative


Ex Input:
Well the story was definitely not what I had expected. Very, very interesting and definitely not something I have read before or probably will read again. Very unique.

Ex Output:

Positive