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 like this product, its good for my hair, but i guess the color fades fast. overall it a good product.
Example Output: Good Review

Example Input: This book is a collection of two books, so you basically get the first half for free and have to buy the second one because they are not in order. This makes me quite angry. It should be stated immediately that this isn't just an inconvenience. For example, if I want to know some information about how to implement data encryption with Mailvelope, I'll look it up online using [...] first, then try again by finding the URL with mailvelope.com/learn? And that's it.
Example Output: Bad review

Example Input: I've never been a regular reader of science fiction and when this book came up as part of the Vine program I was so excited to jump in. However, after finishing it, which took me two days over my break because it just felt like such an endless slog, is that there's really no point to it. First up, I'm only half-way through at this point, but there are dozens if not hundreds or more stories within the first few hundred pages.
Example Output:
Bad review