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

Ex Input:
I bought this from the same co. before christmas and was stunned that the price had doubled. On the page the price was not clear!

Ex Output:
Negative

Ex Input:
It is extremely rare to see so many world famous super artists performing together in the same concert doing some of their greatest hits - Elton John, Sting, Mark Knofler, Carl Perkin, Eric Clapton, Paul McCartney, Phil Colins etc. You must own this DVD before it is out of stock. I would have given it 5 stars should the audio recording be slightly better. Go and buy this one with confidence. I am sure you will not regret.

Ex Output:
Positive

Ex Input:
The Dissapointed. Why do I need demos of all the songs already on Apple Venus 1. Let's bring on Apple Venus 2, after all, isn't that what we were promised?

Ex Output:
Negative