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

Ex Input:
Product was defective from day on and lasted a whole 32 days and now will inflate but by the middle of the night you sleeping on the carpet.

Ex Output:
Negative

Ex Input:
I was enchanted with this fascinating book on barn conversions. Barns are great relics from our past, conveying a sense of history, but many have been ruined by weather, time, and neglect. I didn't realize how many creative architects and owners have made barns useful for both residential and commercial use through renovation and restoration. The intrinsic character of these old barns brings an integrity and charm rarely seen in new construction. In many gorgeous illustrations, Rooney describes the history of barns, their adornment (who knew that it was all because of a 9th century pope that there are so many roosters on weathervanes?), and their use as gorgeous residences and fascinating commercial and establishments - including an architectural office, inns, and even a funeral chapel. One entrepreneur even used several to develop an office complex. If you love barns and if you like to see the past preserved in the present, you will love this book.

Ex Output:
Positive

Ex Input:
This is a great book. I had a mortgage broker look at it and he thought it was a good program--the only drawback he saw to it was that it would take discipline. By the way don't pay $80 for this book from 3rd parties. Go to the author website[..]

Ex Output:
Positive