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 was rather disappointed with this book that promised to offer a true account of the real life adventure of one courageous pilot in the Spanish Civil War. While written very well and quite interesting, it does seem at times like an essay which reads more like history than fiction. The author apparently decided after finishing the manuscript (which includes photographs from his personal collection) about half way through writing it, that he would create a story around it.
Example Output: Good Review

Example Input: Good quality materials and construction. Easy to mount with four bolts on the upper plate then two more in back plate. One of my best purchases ever. Also very stylish, but only time will tell how long it lasts.
Example Output: Good Review

Example Input: I have the DVD and if not for a bit of glitches it would be great. One problem was that after just one song on it - there is a long delay with sound - but then clears up as soon as you turn off machine. But once this dvd plays - when you hit PLAY again it's back where it started. Very frustrating. Also, several episodes are duplicated onto disk so they run very fast until your ready to move from place 1 to spot 2.
Rating: 2.
Example Output:
Bad review