Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I started reading Jean Auel's Earth Children series many years ago. I borrowed the books from a friend who had them. The Clan of the Cave Bear is the first book of the series. The Clan of the Cave Bear is a good read but it is a better read when you read the rest of the series. After working at the local library's book sale where I could obtain hardcopies of several of Jean Auel's books, I decided to just order through Amazon.com those books that I couldn't get at the library. The Clan of the Cave Bear was one of those books. Since I already read it, I decided to go the used book route. The used book I got was in good shape. I was pleased with its appearance. I also ordered Shelters of Stone this way. When Jean Auel comes out with the final installment of her series, I'll just get the hardcover right away, provided it isn't too expensive.
Output:
Positive