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 happened upon this product at Nordstrom's Rack and picked up one. Boy did I wish I had grabbed a handful. I have been buying Origin's automatic lip liner for about $22.00 a pop and these are just as good, if not better. On a lark I searched Amazon to see if they had them. Yep! I use the Black Berry as I like to wear dark and wine colored lipsticks. I am going to grab a handful this time. The liner goes on easily and keeps my lipstick in place. Makes a nice frame for the lipstick.
Answer:
Positive