Definition: 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.
Input: I've been using this brand since I first heard about how great there customer service is. First off, what a refreshing experience dealing with these guys. Great product, excellent price, super fast shipping. I had some issues and called them to find the right solution for me. Their agent told me that if my product didn't work, they would refund me, no questions asked. Not even shipping costs! You are receiving absolutely top notch products.
Output:
Good Review