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

[EX Q]: A really fun book, well worth your time if you like Pratchett. None of our old pals [Rincewind, Gaspode, Vimes, Susan] put in an appearence [other than the guy WHO TALKS LIKE THIS and an old monk with a broom, and they but briefly], but it does add some info to the overall Discworld mythology, and provides some laughs as well.
[EX A]: Positive

[EX Q]: I've bought several air beds from various manufacturers. I bought one identical to this one 1 1/2 years ago. It was comfortable but lost air after 3 months. I justified this as the user may have not taken care. However, I now believe its the brand. This one would not inflate at all. I will not buy this brand again. I've had great life from a better brands.
[EX A]: Negative

[EX Q]: The cable works great. I have been uploading Digital8 video to my processor for editing projects with no problems. The cord could be a bit longer than its 1.5 meters but that's not a major concern. It was a bit pricey, but the steep markup on cords is pretty common across the board. All in all a good purchase.
[EX A]:
Positive