instruction:
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.
question:
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
answer:
True


question:
Review: I'm sure you can see by now with everyone else's reviews that this product is garbage. Well, hey, if you pay close to nothing, don't expect anything much in return! Just save yourself the money and DO NOT BUY THIS PRODUCT... instead, put some gas in your car or something! 
 Polarity: Negative
answer:
True


question:
Review: I have read many authors on the subject of fly fishing. Dave Hughes is a great writer. He puts it in a language a beginner can understand. I am not a beginner but I really like to read his books. I had several of his books and gave them to our new county library. Then I missed them, so I went on amazon and re-bought several of them. Great service! Would do it again. Tight lines. 
 Polarity: Negative
answer:

False