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

[EX Q]: This is a great book so far. I am a little farther than halfway into it and it is great. Although the writing is a little choppy at times, it is definitely worth it.
[EX A]: Positive

[EX Q]: I was sold this item only to learn, after opening the corresponding Web site necessary for eMarker function, that Sony was terminating the corresponding Web service in 45 days!!A great idea but no support.
[EX A]: Negative

[EX Q]: I bought this printer new, when it was HPs top of the line. I have been very disappointed in it from day one.The print quality is fine. The duplexer is a joke. It needs the bottom of the page to grip the paper, so it can not print on that area. The driver software gives you two options to deal with this - print everything at about 90% scale to squeeze the content into the printable space, or re-sort the pages allowing the SW to move the page breaks. Neither is appealing, so I found that I reverted to manual duplex mode - taking the paper out and reversing itself myself.The biggest problem I have with the printer is frequent paper jams. Even when using HP brand multipurpose paper, I find that the printer jams about 25% of the time. In the quest for speed, the paper load mechanism is just too fast, pulling in many sheets of paper instead of just one.
[EX A]:
Negative