Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: I have an office that is a decent size, on the smaller size- but has a very large window and thin walls so it is arctic cold at times. I purchased this heater based on the reviews and the remote control...the remote is great, as is the safety feature. I have only had it a couple of days, but so far I am very happy. I have the thermostat cranked up as high as it will go and the heater on the highest setting and its so quiet I can barely tell its running. My office heats up so quickly my coworkers have been stopping by to warm up!FYI: if the safety button on the back is not pushed in, your heater won't operate. I thought mine was broken until I found this out...
Solution: Positive