Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: I've had this product about 3 years now and use it everyday. I'm amazed at the quantity of music that I can put on it. I haven't used the video part of it, but, in a pinch have used it while DJing when my other equipment failed. I totally recommend this.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Solution: Positive