TASK DEFINITION: Given a review text from amazon and its polarity (either positive or negative). Generate answer "True" if given sentence and its polarity match, otherwise generate answer "False". A review is considered positive if the reviewer is satisfied with the product. Otherwise, it is considered negative.
PROBLEM: Review: I'm now on my third charger for my Powerbook (my dad says I'm rough on equipment). Let me tell you, the Macally is NOT it. Like others, it fluctuates between charging and battery every 1-2 seconds and the brick makes weird squeaky noises. After not having a computer for a week and being so relived to finally get this charger, I was almost in tears to find that it is a piece of crap. It charges when the computer is off or in sleep mode, but that's not going to cut it. If you have a Powerbook G4, don't waste your money on this. 
 Polarity: Positive

SOLUTION: False

PROBLEM: Review: An AC/DC power converter is a very basic item, so I had little doubt that this sub for the expensive Apple original would be effective, though not stylish. Unfortunately, we have had problems. The Powerbook started delivering electrical shocks and inconsistent charging with this adapter, and they got worse when we moved to a country on 240V. I know that the shock problem comes from the Macally adapter because I have another PB and an original Apple power supply, so can do all combinatorial tests. I like Macally and have several of their other products. I probably just got a bum unit but unfortunately cannot deliver a positive review based on previous experience with the company. 
 Polarity: Negative

SOLUTION: True

PROBLEM: Review: As many others have reported, this Zr40 began eating tapes with only a few hours of use on it. I have lost many precious moments recorded on tape because of the tape loading problem.The only good thing I can say about this camera is the bag was large enough to hold my Nikon P100. The Canon is going in the trash. 
 Polarity: Positive

SOLUTION:
False