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: Heart was back, and bigger than ever. 'Heart' was a last ditch effort to keep the band together. If it failed, Heart would no longer exist. Well history shows what happened.MTV made four videos for this album, and they made Nancy Wilson every teenager's dream girl. Ann was always my favorite sister and she looked real good too. MTV milked this album for all it was worth, and Heart was now an official '80's band', like it or not. This album brought a breath of life into their career that seemed to be standing still.Besides the singles, I always liked 'The Wolf', but 'Shell Shock' was by far the hardest, loudest, most rockin' tune on the whole album.
Solution: Positive