Part 1. Definition
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Part 2. Example
I've read this book with much expectation, it was very boring all through out the book
Answer: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Part 3. Exercise
Wanting to share my water rocket memories with my kids, I decided to try this rocket out in spite of all the bad reviews. I agree, it is junk. While the whole thing is cheaply constructed, the biggest problem I see is with the pump. The valving is so defective it simply will not pressurize the rocket. Even though I was very gentle with the pump, it came apart after only a couple pumps and the rocket never flew. I'd love to find a good one of these but this one is not.
Answer:
Negative