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

[EX Q]: The sizing of this costume was fairly accurate but it very cheaply made. After only a few wears, the mask and belt both broke. I wouldn't recommend this costume.
[EX A]: Negative

[EX Q]: This is my mom's account. I had the pleasure of reading this book in English this year. I can honestly say, it is the single most boring book I've EVER read. You will NEVER find someone my age that enjoys this story. It has no action! No suspense! It isn't deep! Things don't symbolize anything. If they do, then you're thinking too hard. This book is not a classic. It is the worst. I'd recommend copying a dictionary before I'd ask you to read this pile. DO NOT EVEN THINK OF BUYING THIS.
[EX A]: Negative

[EX Q]: This unit is well built and works really well. It was just used to startup from a drained battery(left my Mac on battery all nite..duh). Well, at 0% charged, I plugged this unit in and starting web browsing, in minutes the charge was at 2% and rising, as well as keeping up with the browsing demands. For the price, it cannot be beat. It also seems I keep forgetting to unplug the original charger when I pack to do travelling, so this new unit makes a great spare to keep packed in my laptop case.
[EX A]:
Positive