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've read many books on Hollywood, including Kevin Costner's book, which is well written.
Example Output: Good Review

Example Input: Purchased this for an LG TV and it works well. Great Price as compared to same item from other manufacturers. Thanks Amazon.
Example Output: Good Review

Example Input: I would never buy this product until the software that is supposed comes with it work properly because you can't delete anything to save your file. You have be good very slow but if you are looking for something fast and don't plan on deleting or messing them up then it's perfect get it.
Example Output:
Bad review