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

Example Input: I've now been through three of these cords. they seem to last around a year before just dying. The first two eventually had fatal connection issues with the piece that connects to the computer, however my third one has just died and is actually not getting any power from the wall. The little indicator just fades out, and now won't come on at all. Yes it's a lot cheaper than the other cords, but I'm just not sure its better. I know lots of people have problems with the apple cords as well.
Example Output: Negative

Example Input: Last year I found this book and once I opened it I could not put it down. Bugliosi is excellent at bringing the details to life on the page. Not only do we get a first hand account of the trial, but he also explains much of the legal process in very clear and understandable terminology. I am now a fan of his work and will be reading everything I can of his.
Example Output: Positive

Example Input: I never got the battery and im still waiting on it, I want to know whats going to happen cause im still waiting
Example Output:
Negative