Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

I just bought this book about a week ago. The first half of the book, which discusses issues such as how to implement business goals in your life, is very good. Then after that, there are various cases examples written by CEOs and others that help reinforce what they've discussed. Finally, there are several case studies with people who have become successful through their own hard work (i.e. one entrepreneur at a local store).
Good Review

I was excited to get this book, it looked like such an awesome deal. But as soon as I put my order in they canceled it and sent me instead. It took them three days after they told me we wouldn't be getting the book. Terrible experience. They also just cancelled the first one over night. Amazon needs better tracking systems.
Bad review

Does not appear to get heated up. Just plugged into my netbook and kept going. Great little adapter. Would recommend for someone looking for similar product. Was shipped super fast. Good service.
Good Review