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've had HP printers for years and have always liked them. However, this printer is a real headache. We've had 3 --taking the time for returns was a hassle. With each of these HP printers, the paper feed mechanism has been defective. With every document I printed, the feeder malfunctioned and the paper was torn or badly misaligned. I found out on the HP website that others have had similar problems with a number of HP printers--malfunctioning paper feeds. HP has done nothing to correct this problem. I've now become a Canon printer owner am quite happy with Canon printers--excellent quality and no problems. I'll never buy another HP printer.
Solution:
Negative