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.

I got this book as a gift and was very excited to open up the package. Unfortunately, it's a total disappointment. The author obviously did not do any research on her topic of time travel (which seems so simple in theory and makes it sound like science). She used some words that made no sense, such as:"In fact, my mind is working at warp speed because I'm doing some intense thinking right now.
Bad review

I love this product. The sound quality is incredible and it fits comfortably for my ears. It sounds way better than many Beats headset I've own. Would recommend to anyone looking for a great headset at an amazing price.
Good Review

These earrings are cute and go well with a lot of outfits, but they fall out easily. I find them to be very uncomfortable even though the posts at the back end help hold the earring in place. Not terribly happy about that. Will not wear this style again. Would appreciate feedback from all who have purchased these, what happened after a few wears. Thank you for offering them. If we had more luck, we may order another pair soon. We want to send these back.
Bad review