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

Example Input: I bought these to help with what I've read, to get the Jawbone to fit better. These ear pieces were hard to get into the ear no matter what size I tried. For a wireless earpiece you want to be able to get it on and off your ear quick if you need to, and these prevent you from doing so.
Example Output: Negative

Example Input: I have been buying Hi-Tec for years. When I found the Altitude IV I fell in love instantly. This shoe fits great, has little break in time and still holds its sturdiness as it ages. Well recomended.
Example Output: Positive

Example Input: This is another fabulous work by James Clavell, a stand-out in his collection. Even though the book was set in a prison camp, all I thought about was that I wanted to be 'The King'. A rivetting story of life and death, friendship and betrayal. Shorter than his other works, but equally valuable.
Example Output:
Positive