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

[EX Q]: After reading all the great reviews on this product on Amazon, I decided to go for this. I don't typically have good results from diet products, but I figured I'd give it a shot. I've been taking these for 3 weeks, as directed, and I might as well have been taking sugar pills for all the more this is doing for me. I felt like my appetite increased, I haven't lost any weight at all - in fact I've been fluctuating up and down 3 pounds for the past couple of weeks. I gave this two stars because I didn't feel the anxiety or sleeplessness that some people complained about, but I'm still disappointed. I was hoping I'd find something that actually worked!
[EX A]: Negative

[EX Q]: Yes, all the reviews are correct: This is an excellent writer detailing some of the most gruesome killings of all time. It is the fastest 650 pages you will ever read, I gaurantee it.One note: This book might also be called "Vincent Bugliosi: The Man Who Brought Down Charles Manson And Lived to Tell About It." That is to say, Bugliosi is evidently proud (rightfully so) of his accomplishment as the lead prosecutor on the case. And he pretty much makes mincemeat out the intellect of the LAPD and the defense attorneys involved. But like any good prosecutor (and Bugliosi is most certainly that) he has quite a bit of evidence to back his charges of ineptitude. If I were Kanarek, or a Tate detective, I'd be pretty embarrassed knowing this book is an all-time bestseller.But who are we kidding, this is the definitive book on Tate-Labianca. A truly fantastic read.
[EX A]: Positive

[EX Q]: After about 3 months things started going down hill really fast. After leaving it in the car on a summer day something went wrong with the with the power saver. I'd charge it over night and the next morning it would be dead. I'd listen to it for 5 minutes, turn it off, then turn it back on and it would be at half power. Recently the screen broke. That just gave me a good reason to get rid of it.Trust me, keep looking.
[EX A]:
Negative