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 bought this product on December 5, 2012. However, the battery died already in March 2013. In May 2013 it was hard to charge - sometimes you had to press and hold but by July after 10 uses (I was listening for about 2 hours per day average) It started acting up. The bluetooth stopped working so music sounded like the speaker is blown. So no matter how much I try to fix it, it's useless. Don't buy this!
Bad review

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:&#34;In fact, my mind is working at warp speed because I'm doing some intense thinking right now.
Bad review

I got this for a friend and she hasn't used it since the day I gave it. She said that it does not keep things hot enough. I don't know how to tell if it's too small but you would think for $90 they could've made a bigger thermos.

Bad review