Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I used to love these rockets back in the day when I was a kid, so I got one for my 11-year old son. When it arrived, it looked like the ones I had as a kid, but was obviously of cheaper quality. Then again, it cost only a few bucks. Problem is, when I put the water in and then snap close the end of the pump, all the water leaks out! This happens whether the rocket is pointed up or down. The rocket is totally useless and we had to throw it away. Too bad, those rockets sure were fun a long time ago...
Output:
Negative