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 is an excellent product. It replaces a unit that broke after some time. The old one had the battery door open and needed to be recharged. You need two AAA batteries. It's lightweight - good to travel with. Batteries can last 2-3 weeks between charging. All in all I'm very satisfied with performance - no complaints.

Ex Output:
Good Review

Ex Input:
I did enjoy the movie and enjoyed it very much. My only complaint is that they changed everything. They took out all of the parts that make this version unique from past versions! It may be a little annoying for fans who grew with those parts. But, after watching the whole series, one would expect that. The story was good but didn't follow the books. It's been three years, but there are many people still upset at where things were handled.

Ex Output:
Bad review

Ex Input:
These headphones worked for about 3 days. I was running with my Zune and the right headphone quit working which made me so sad. The sound is very good, but if there's a bad design it's not going to last long. They were comfortable when they work though. Maybe I'll return them. I'm really afraid they'll stop working. I just got it in January. Can't do anything right now. =( Please help me. Thanks.

Ex Output:
Bad review