Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example is below.
Q: I've read this book with much expectation, it was very boring all through out the book
A: Negative
Rationale: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: Not only is the heat (btu)rating false, (in my oppinion), but to me it doesnt put out heat at all (relivently speeking) the tip over feature has prevented the unit from opperating several times in the 3 hours since i recieved it.. furthermore.. i will never purchace a heater made of plastic.. think about it.. plastic melts and metal doesnt (at the advertised tempurature) the fan speed i would equate to a gentle breeze if that. the heat output is far, far, below what i would have expected based on the advertisement.. basically in my oppinion this product is worthless to purchase unless you are trying to heat a refrogerator box sized space 5 degrese in a 70 degree enviroment.. look elsewhere for your heating needs.
A:
Negative