Given the task definition and input, reply with output. 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.

Very bad book!!! I've bought this book as a gift and I got two bad books like in other reviews here in amazon :(. The pages are dirty already!!!! Never buy from here!!! I'm very disappointed.
Bad review