Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Input: Consider Input: I received my new Rhomba, and was all excited to open it and try it out. I open it and go through the quick setup guide and plug it into a USB port on my pc so it can charge up. As I am waiting for the unit to charge I start reading through the manual and come across the following message... The cables that come with this unit contain LEAD which has been shown to cause CANCER and it is strongly suggested that you wash your hands after every time you touch them....Say What???!!!! I fired off an email to Creative asking them to provide a little more clarity on this statement with no response. Needless to say I am returning the unit.

Output: Negative

Input: Consider Input: This portable heater is good for use in your office, den or sleeping area..It is quiet and efficient,and is good for spot heating...please keep away from drapes or rugs,and small children,who might mistake this heater for a toy...Otherwise this is a good deal...Mine came with a remote to adjust setttings more easily...4 star rated...

Output: Positive

Input: Consider Input: Mike Connors was in the wrong place at the wrong time and now he is talking to Blue. Blue has something special to share with Mike, Blue is a serial kiler who is stalking the people of the small town where Mike lives. Blue wants to shre his thoughts and feelings with Mike, but Mike doesn't want to know. Mike is also making Blue angry - something that he really doesn't want to do. This gripping book will keep you glued to your seat from the opening scene to the spine tingling twist at the end of the story. An intense read that will leave you thinking long after you have turned the last page and closed the book.
Output: Positive