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

Example Input: Currently, there are no wholes throughout the bed. But, for some reason when I wake up. The bed is already out of air. I only weigh 120lbs. I don't understand why it does that. Please save your money, when you start to have the same problem.
Example Output: Negative

Example Input: I saw this movie when originally released in 1970.It had always left a strong impression upon me.Seeing it 42yrs later,is a real treat.It had created a profound impression upon me in '70 but years later it had softened a bit.The depth and beauty of Ireland is quite evident.Robert Mitchum,is stellar in this role.The story is timeless.
Example Output: Positive

Example Input: this video has a lot of dances for learning but each dance has only 3 steps so dont expect so much from this teaching video. if you want more than 3 steps then buy videos exclusively for a particular dance. this video will just wet your appetite but will not fill your hunger. also, the background setting of this video is very dark as if you are inside a dark night club so you cannot see the footsteps of the teachers because both of them were wearing black pants that blend with the dark background, terrible! plus the teachers teach from the side of the camera and sometimes facing the camera. this is not the ideal way to teach dance in a video. the teachers should be back to the camera so you can follow their footwork. for the money they charge for this video is not worth it.
Example Output:
Negative