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: Great product. Easy to install. Gave me hours more viewing for my TV. This product improved watching HD programs with my new Samsung HDTV.
Example Output: Good Review

Example Input: I ordered these in 2 colors....blue and purple, both of which arrived defective. The right ear piece only functioned sporadically without any input from my phone at all. Amazon is sending me a replacement pair but the same problem with second pair. Very disappointed in this product for quality control, however they were pretty great when working right. Will give it one more shot before resubmitting review. Don't buy unless you want to waste time trying out multiple pairs.
Example Output: Bad review

Example Input: I recently went to the local mall and picked this dvd up for 19.99 thinking it was a good deal but once i finished watching it, it's pretty darn stupid. Even though Jackie Chan is in this, he's not very good. He's just going through some routine and you can't really care about him. There's more talking than fighting. It's like every fight scene consists of Jet Li fighting people. Then after awhile its actually funny because there's all these guys running around with their faces covered from various diseases.
Example Output:
Bad review