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.

[Q]: 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: Positive
[A]: False


[Q]: Review: I have been using this product for 5+ years. It was wonderful. About 1 year ago the company changed packaging and the product changed slightly. The bottle is taller now and something is missing from the serum. Doesn't work as well as it used to work. I will not be purchasing this item because of the change. 
 Polarity: Positive
[A]: False


[Q]: Review: Book is over 600 pages and the print is so small it was difficult for me to try to read so I returned it. Perhaps if it ever comes out on Kindle I would try again. 
 Polarity: Negative
[A]:
True