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.

Example Input: I was really excited about this book being as it is geared toward a young adult audience. This book reminded me of the "Twilight Zone" for adults. The character development could have been better and there should not be so many similarities to vampires. All in all it's an interesting story with good premise. But, you need some things worked out.
Example Output: Bad review

Example Input: This is an excellent product. It replaces a unit that broke after some time. The old one had the battery door open and needed to be recharged. You need two AAA batteries. It's lightweight - good to travel with. Batteries can last 2-3 weeks between charging. All in all I'm very satisfied with performance - no complaints.
Example Output: Good Review

Example Input: This was not good. Too many plot holes and too little character development. Also a lot of grammar errors such as missing words or wrong word usage. I finished it but only cause I just wanted to see if they ever found the girl that got away. If there's another book in this series I'll read it. There were enough questions left unresolved at this point so perhaps more will be revealed. All in all, an ok read. It does have potential... maybe it'll get better as time goes on.
Example Output:
Bad review