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 Input:
Review: I got one of the earliest examples of these new devices. They are simple to install and fairly simple to use. In essence, you put it on your keychain, and anytime you hear a song you like (and perhaps want to buy), you hit the button. Then, you attach it to your computer via the cradle, log on to Sony's eMarker website, and by selecting your city and station (you must remember what station you were listening to when you hit the button), it checks the time stored in the unit against the playlist supplied to the Sony website from each radio station. You can get some info on the song/artist, hear some clips, and if you're so-inclined, you can buy the complete song from Sony via download. This is a 'free service', unless you decide to buy the music. In that sense, the eMarker is a clever tool for Sony to sell direct-to-consumer, avoiding the other means of internet distribution now available, as well as circumventing the retailer. 
 Polarity: Negative

Ex Output:
True


Ex Input:
Review: I used this product a couple of times and was not really impressed. To get good results I guess you would have to use it in a specific area for a good length of time, otherwise not much good. 
 Polarity: Positive

Ex Output:
False


Ex Input:
Review: [..]Let me warn all potential customers that this book is all about quantity of material instead of quality. While the book does cover such advanced topics as Fourier Analysis and intro to Partial Differential Equations, the book lacks sufficient examples about what is being said (a number of sections have no examples at all).I did find the most well-written sections to be the application of second-order differential equations (applied to spring oscillations etc.) However, as far as getting a bang for your buck, I HIGHLY RECOMMEND Morris Tennenbaum and Harry Polland's Ordinary Differential Equations Dover edition (cheaper, and MUCH MORE effective. Trust me). 
 Polarity: Positive

Ex Output:

False