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

Ex Input:
my scanner hasn't worked since the day i took it out of the box, installed the software, and the green light is on but when i hit scan it does nothing! looks like it's a dud. lol.

Ex Output:
Negative


Ex 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.

Ex Output:
Negative


Ex Input:
This is a powerful book. It is written in a clear and engaging style. It is important that people know about the human rights abuses going on in Sudan. Mr. Bok's story does this in a meaningful and moving way.

Ex Output:

Positive