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.

Ex Input:
Didn't work. Tried it with 3 different phones and same result. The mic worked only when held in front from ear canal, that's not how they were advertised.

Ex Output:
Bad review


Ex Input:
This book has very little usable information on starting a blog, and less guidance about how to create one in it's own right. The authors seem more infatuated with Tumblr as an example blog page than they do using WordPress for a new blog. Since I've been doing blogging myself since 2002, I really doubt that this post was written much over six years ago.

Ex Output:
Good Review


Ex Input:
I purchased this to charge my iphone. It can fully back the phone three times with one charge. It's good for emergencies or when your batteries can't cut it. In that aspect, it serves its purpose. However, be advised these units are not exactly water resistant. They cannot even resist splashes of water. For those reasons, I'd recommend getting them water-resistant and charging only while outside. Otherwise, it's a handy device especially in long trips where you might run out of juice before plugging in.

Ex Output:

Good Review