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

Ex Input:
We bought this for my 4 year old son for Christmas and I am very sorry we spent our money on it. Putting it together was not fun, but the real disappointment came when it was done and you see what it is. I think it is unrealistic to think that most people will want to or ever allow this toy to be STUCK to the wall with an adhesive (it says not to leave it stuck there for long periods of time - you must remove it from the wall after playing with it - which means this flimsy piece of plastic is now laying on the floor). After playing with it for 10 minutes, the elevator gets stuck. The top keeps falling off, everytime I turn around my son is whining that this came apart or that came apart. I assume I will be super gluing it before long. I feel ripped off as a consumer. Buyer Beware!

Ex Output:
Negative


Ex Input:
"Castle" is a wonderful book for children who have short attention spans. It provides adventure and re-affirms the laws of chivalry.

Ex Output:
Positive


Ex Input:
Nice, item for the price, but not good for shower curtain use; not enough tension force. Best for light curtains in small windows.

Ex Output:

Negative