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: This was a very short book. I read it in about 15 minutes, although I feel that the writer could have added more depth. It is not anything worth recommending to my friends, just something you might be interested in. The author mentions his favorite authors only twice throughout the whole book, which seems odd given how little of them he uses. If you're an established author, this book may get under your skin. Otherwise, look for others out there. I'd keep looking and save your money.
Output:
Bad review