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:
This video is really a disappointment, it came with a Thomas piece so naturally my daughter picked it and I thought the bonus "feature" wouldn't be mixed in with the actually Thomas stories but I was wrong. My daughter easily lost interest when the people would come on and talk about loving Thomas and getting to ride the real Thomas train... I was totally annoyed.
Answer:
Negative