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: 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.
Example Output: Good Review

Example Input: This is the only album by this legendary singer not to include songs that are sung in Spanish. It also has many other songs that I had never heard before. The book and extra discs with photos of Chucho were all nice additions as well. Too bad there wasn't a CD included or they would have been perfect. Now we need another excellent biography about him. But maybe he isn't really dead. Hopefully, someday someone can record Chucho.
Example Output: Bad review

Example Input: There were many grammar errors. While there are several typos in most books, they all had at least one error.
Example Output:
Bad review