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

Example Input: This thing is a major piece of junk. It doesn't stick to the wall like it claims. You have to stand to play with it (cause all the cool stuff is at the top), and the extension pieces constantly fall off. I actually screwed it to the wall, but that lasted a whole 10 minutes as it wouldn't stay screwed into the wall. Then the scenery kept falling. Save your money and buy the cool batmobile or something.
Example Output: Negative

Example Input: The book gives a thorough discussion on the PRACTICAL implementation of the Transactional Ananlysis "I am OK, You are OK" theory.It is therefore a must read if you are into Transaction Analysis or you just want to imporve your leadership skill.Please remember to come back to give this review a vote after you have purchased the book and have read it form cover to cover.P.
Example Output: Positive

Example Input: The bed is nice and soft and double thick. The auto pump is easy to use and works pretty well with new batteries. The vacuum drain does ok but when down to the base have to help it by rolling it at the end. Folding it isn't to hard and package size isn't to big so easy to store. Bed lines fit ok on it but get good one so they squeeze tight so they hang on. But for the money is a great buy I shopped around a lot target, walmart, dicks, Meijer, sears, kmart, ect. So very good buy if you want one for camping or a guest bed.
Example Output:
Positive