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.

This is one of the worst books I've ever looked at and read. It's just a waste of time. Save yourself 4 days with your friend (who isn't reading as well), read something, anything! You will actually learn more watching paint dry. In all seriousness.
Bad review

This should be more than an $18 speaker system. You will waste time and money.
Bad review

We gave this as a gift to our son for Christmas. He said it was great, but when he opened the package, two filters were broken in each pack. They were both within one bag, so that means they are broken.

Bad review