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:
This book was written in the 70's by a man who knows his stuff, which is a rare find nowadays. The problem with it is that he relies too much on anecdotal stories and anecdotical sources to support his hypothesis. It feels like reading someone's blog, not science. Also, some of the anecdotes don't make any sense unless you can explain away how they happened.

Ex Output:
Good Review

Ex Input:
Poor quality! Plastic frames broke upon putting on these glasses. One fell off and then broke. Not worth even the price. Returned this item... too bad, because the glasses looked great!!

Ex Output:
Bad review

Ex Input:
This book is an excellent introduction to many facets of modern Japanese cuisine, especially the food that may be found in Tokyo's restaurants and hotels.

Ex Output:
Good Review