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

Example 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 ...
Example Output: Negative

Example Input: Lots of great ideas for those with unlimited budgets. Many of the suggestions are not within the economic means for those thinking about setting up a shop; although the author includes many photo's for the "Dream" shop. Most references to tools include equipment that costs $1,000's (or more!). Lot's of fluff from the author and plentiful color photos of shop layouts, tools, and equipment that the average "Joe" would spend decades purchasing. Not too much "practical" information about "The Practical Guide to Designing and Building Your Dream Shop". Definately a dream.
Example Output: Negative

Example Input: Enjoyable ride through time from modern ages to the far far future of the universe. The action starts out slowly enough as the crew begin their journey but it builds speed with a nice deliberate pace. The scope and depth of the book accelerate inevitably and irresistibly along with the central characters themselves. One of my favorite aspects of the book is that it is paced very much like climbing a mountain. Just when you reach what appears to be the peak, you realize there is even more to come, beyond what you had previously imagined.The physical description of the effects of close-to-light travel is also quite enjoyable and is one of the features one would expect from Reynolds, as a former scientist and a noted hard-sci-fi writer. I tend to have a soft spot for stories that follow human civilization through a rapidly accelerating future history, in particular those that explore technological singularity or singularity-like events, and this one satisfies.
Example Output:
Positive