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]: I've had these filters for about a month. I can notice an improvement in air quality, but no changes regarding our overall health. However, we use the filter everyday, so it's not like we're breathing cleaner air. This isn't to say that there aren't other better ways of providing clean air, though. Still, it seems worth it and we love being able to feel good knowing that we're doing something healthy with our money when using this..
[A]: Good Review


[Q]: We just received the item today and were so excited to have it in our bathroom. I filled it up as the instructions said, hung it, then turned on one of two fans that we purchased at a big box store. They both ran for 5 minutes then stopped turning. All they do is oscillate. I've been looking into buying an electrical timer switch but now that I think about it, you shouldn't need to.
[A]: Bad review


[Q]: The product arrived in a timely manner but was not as expected. This didn't work properly and the company couldn't explain why it wasn't working so they refused to replace it. Would have been nice to know that before I bought one. Will think long & hard about buying anything from this company. Their customer service is poor. Save your money. Buy something of better quality. A waste of time for me getting the speaker out & returning it over 6 weeks ago. Wish they sent one with correct product.
[A]:
Bad review