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.

Q: The main thing I got out of this book was to take note of the difference between a'market' and what an artist thinks a market could be. While the writing is fairly competent, it can not be taken as completely self-serving. It seems to suggest that if you give them enough money they'll keep coming, but they won't. There are some interesting ideas there, but they're scattered amongst the clunky writing.

A: Bad review
****
Q: This coffee cup is just about the perfect size. I enjoy drinking an espresso and a large mug will not always fit. So while this product didn't solve my problem it came pretty close. The color of the chocolate brown adds to its classy look. It only gets 4 stars because you have to hold on tightly when washing or any liquid from your beverage will spill. A great buy though for anyone that wants better tasting coffee!

A: Good Review
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Q: This product came on time and looks exactly like the picture but it doesn't work.

A:
Bad review
****