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 went by the Squeem chart and my waist measurements to find the correct size but to my suprise the waist cincher did not fit. Warning, you cannot return for a refund; only merchandise credit/exchange. Also, the cincher smelled like burnt rubber. Very bulky and will be visible through clothing so you cannot wear with tight fitting clothing.
Answer:
Negative