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.

Ex Input:
This product performs as expected.

Ex Output:
Good Review


Ex Input:
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.

Ex Output:
Bad review


Ex Input:
Our dog is always playing with these tennis balls. He carries them all over the house. They are sturdy for a large dog. I have bought cheaper tennis balls and he has chewed up both in no time. So far so good on these. I think they will stand up. We keep buying this brand. Great product!

Ex Output:

Good Review