Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: I ordered this for a friend who was displaced and has had to start over. He had a Airbed from a store but kept having to bring it back due to leaks and other problems. This bed looked much more comfy and with my Prime discount I sent it to him. Within the two day time frame it arrived and as soon as the other bed sprung another leak he put it to work. He says it's very comfy compared to the other so if he's happy I'm happy with the product
Solution:
Positive