Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[Q]: This is not a new book;perhaps that's why it is so useful.There is no gobblygook, no arcane economic theories with fancy lables.What there are in this book are many examples of - - if the government takes this action to make this or that happen, the unintended consequences have proven to be and will probably be again something quite different, and usually not positive.Sound experiential economics in my view, clearly written; and a tremendous help to understanding what will probably happen if the nation takes on more debt, subsidizes this or that interest, taxes one interest at the expense of another, etc.I liked it; I could read and understand it.
[A]: Positive


[Q]: The case I had didn't fit properly - the window obstructed the rightmost side of the display. You could shift it over, but it would always shift back. I don't know if they are all that way (maybe I got a bad one?), but I didn't want to buy another one to find out.
[A]: Negative


[Q]: i first heard the track bingo on the radio not long ago, and that has now opened a whole can of worms for me. how can one album be so catchy, raw, fun,fresh ,chunky and funky. while so many rappers drawl on about tired blah blah, MIA just mixes the singing and ragga-ish vocals straight into the most modern type of no-category music with little effort. the style? its kind of UK grime meets hip-hop meets calypso or something. definately a british vibe here, but this is still unique. the beats and sound effects are very well implemented into the chatting. cant stop listening to this. wicked stuff
[A]:
Positive