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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
I got this product in April and exactly two months later it said my subscription had expired and I needed to renew in order to keep receiving updates for antivirus protection.I wrote to the company and a week later they sent me a reply. The reply was to go to their update center and to renew. I sure wasn't going to pay again for something I only had for two months and its suppose to last for a year.I'll be going back to my trusted Norton Antivirus, it may be slow but at least I only have to buy it once a year.
Answer:
Negative