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.

[EX Q]: Review: There are plenty of tension rods out there. The _only_ advantage of the Umbra rods is that they look better. (Why other manufacturers haven't figured out the design part is anybody's guess.) The problem with the Umbra rods -- all of them -- is NO tension. I have tried these repeatedly.... Why? Because my local hardware store carries them, and they are readily available elsewhere, and I have opted for form over function. Every single Umbra rod I have used fails drastically. They simply cannot bear any weight. Or, to put it differently, they cannot exert enough force against the surfaces they extend out to for them to bear any load. Worse, the springs that are the key element in sustaining the tension tend to fail. When those springs fail, anything you have suspended by the rod will come down. If it's a lightweight drapery panel, you may be in luck. Otherwise, forget about it. 
 Polarity: Negative
[EX A]: True

[EX Q]: Review: This product was just what I was hoping for, and I had no problem with shipping. I highly recommend this product. 
 Polarity: Negative
[EX A]: False

[EX Q]: Review: i bought this product when my original ac adapter was destroyed by my dog. even at the price i paid, this was an awful product. most of the time i had to spend forever to jiggle the connecter into my mac to get it to even stay connected, and then it would just spontaneously stop charging and i have to jiggle again. it's awful! i never had any problem like that w/ my original mac ac adapter. it's gotten so frustrating that i think i'm going to take a hammer and smash it into pieces. and technical support doesn't reply my inquiries. do NOT buy this product, even if it seems cheap! stay away from it! look around on craigslist and buy a used adapter instead. this adapter is garbage 
 Polarity: Positive
[EX A]:
False