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

Input: Consider 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.

Output: Positive

Input: Consider Input: I have a sixteen-year-old who is questioning all morals. I was finding it difficult to put into words the importance of morals. I bought this book for her to read. She isn't reading it, but I am and I'm finding it very helpful in facilitating discussions with her. At dinner time I bring up one of the seven moral virtues and ideas that the book presents. I've found that it leads to great conversations with her about character and moral behaviors. It has given me the words for concepts that can be difficult to convey in our current morally challenging times. I recommend buying this book when your children are young and referencing it often.

Output: Positive

Input: Consider Input: A GOOD VIDEO BUT IT DID NOT HAVE ENOUGH INFORMATION THAT I COULD USE WITH MY CLIENTS.A HELPFUL OVERVIEW OF WHAT IS POSSIBLE
Output: Positive