Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Ex Input:
I bought this for my great nephew - 18 months old who is already learning to count and learn his colors. I also got him a dino puzzle by Melissa & Doug. Both items are really great. They are very durable and colorful so he likes playing with them and putting the shapes back in their places. The number puzzle is fun because when you take the number out, there are pictures under each number for example - take out the three - there are three turtles (I may have the wrong animal but you get the gist!!). His 3 year old cousin that visits often also loves playing with them so they have a good age range.

Ex Output:
Positive

Ex Input:
I am a complete Sudoku addict and am very disappointed with this book. The only reason I bought it was because I was desperate for more puzzles and it was the only one available at the store I was in. First of all, it costs $4.99 which to me, is way too much money when you can get a Kappa book for $1.99 which has better puzzles. Another thing that bugs me about this book is that some of the answer keys in the back don't match the corresponding puzzles. When I get to the difficult/Very Challenging ones in the back, sometimes I need a little help! But unfortunately, this book has quite a few errors in the answer section so when I've hit a dead end, it's over.I would recommend Kappa books from your local supermarket. This simply costs too much money for not mush quality.

Ex Output:
Negative

Ex Input:
This is one of the worst books ever. It tries to capitalize on the Chicken Soup for the Soul-type, void of any substance stories. This was not written by the author and takes advantage of people around her by publishing stories from them. With no new insight, Samira, a strictly amateur writer, doesn't contribute anything. Fortunately, it's by a vanity publisher and the only people who buy it are her friends (who posted here from "Grand Blanc" and "Michigan" because Samira asked them to) and a few people who found it online. Please people, avoid this book, buy something that will be worth your time and money.

Ex Output:
Negative