Definition: 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.
Input: This book has been out for years and yet I have the nerve to offer a positive review?! It's full of grammatical errors. It also doesn't describe what you're expected to learn from it.
Output:
Bad review