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: This machine is really good, but not without some problems. While the noise it makes does a lot to mask other noises, our cats definitely do enjoy this thing. It also helps keep them calm, which in turn, brings us much peace of mind. However, sometimes you need your hands free for something else -- like getting the cat out from between the mattresses.

A: Good Review
****
Q: If you've purchased many types of mosquito repellent over the years, you'll have heard all about this product.

A: Good Review
****
Q: This book was a big disappointment. It lacks depth, has no new information, and is not entertaining - in fact, I'm embarrassed to tell my friends I own it. The only thing it accomplished for me was, ironically, making my job more difficult. As it turns out there are many &quot;self-help&quot; books about finding your true passion that offer much more, as well as numerous websites devoted to this subject.

A:
Bad review
****