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.
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Question: Bought from AMAZON for my mother and they work great. They sound clean no noise when playing CD's.

Answer: Good Review

Question: It's ok to read but for a book about dog training it didn't seem like there was a lot of specific info or guidance. There is one very simple sentence that helped train my dog, and then it's the same things every week. Glad I bought it used. Good luck if you buy new. But this was helpful in some ways. We have a new puppy right now we needed help with potty training.

Answer: Bad review

Question: I love these bottles. They work really well while out and about. So much better then the plastic ones that I tried out. Plus they are not expensive!

Answer:
Good Review