Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I love Tina. Her music is the epitome of energizing soul-rock. We looked forward to this DTS version of her concert. We put it in, sat back, and after 5 minutes into the concert I was becoming agitated at what should be a great show. The music was great, but after 30 minutes I was going nuts. Then it dawned on me: the camera work is absolutely the worst. It's horrible. It detracts from the concert. It never stops moving. It never stops fading in & out. It jumps from one angle to another. It changes every few seconds and it never stops for the whole concert. A bunch of high school kids could have done better. I hope we can find another Tina concert worth buying but the Amsterdam concert was a waste of our money. What a cryin' shame.
Output:
Negative