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

Q: I bought this air mattress to use while my new bed was being shipped from back east, the bed lost air every night and I woke up almost on the floor. I tried to send it back but it was impossible to get back into the box.

A: Negative
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Q: 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.

A: Positive
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Q: I've had this printer for a while now, and i rarely can get it to work properly. When it is not taking 2 pieces of paper at a time, it is printing in some strange code. The quality of the picture is alright, but nothing special. I would highly recommend not to buy this printer

A:
Negative
****