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: The musical performances here are quite dull. There is nothing wrong about them except that the musicians seem to be simply doing their job and nothing else. If I had paid good money for this concert in person, I would have been highly disappointed. The video quality is even worse. The DVD is cheap but not cheap enough to justify its purchase. 
 Polarity: Negative

SOLUTION: True

PROBLEM: Review: This movie was perhaps Adam Sandler's worst effort. He seemed tasked with the burden of playing a man who was apathetic, but he came across as being apathetic about the role. The result was that his performance never engaged viewers to want to pull for him, which made the climax of the film lackluster. It was occasionally funny, considering the title and cast of comedians, who played comedians. The last 45 minutes, the film changes pace entirely, as if it wasn't floundering enough, and drops its attempts at weak comedy to push even weaker drama. Despite all the big names and cameo appearances, the only real stand out was Leslie Mann, who plays Sandler's ex. She was the only lively force in the cast, but sadly, alone she wasn't enough to bring it back into focus. You're not missing a thing. 
 Polarity: Negative

SOLUTION: True

PROBLEM: Review: I ordered this new knife from Amazon based on the Laguiole name, prior Sabatier experience and the one review (5 stars). What a disappointment! One side of the blade had very visible tarnish and reddish blue spots (not sure whether rust or previously used). It also has a very light and extremely cheap look with poor manufacture. It is made in France, but it goes to show that junk comes out from there just as easy as from China, Pakistan or anywhere else. True you get what you pay for, but this one wouldn't be worth even 2 bucks at a yard sale. Maybe it was a defective unit, but I didn't want to take a chance with a replacement. I never even tried to use it, and simply returned it. To Amazon's credit, their return process was great. Just follow the online "return" process, print the (free/prepaid) return label, and take it to any USPS station. Amazon's service earned the second extra star. 
 Polarity: Negative

SOLUTION:
True