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

[EX Q]: Jack Higgins may not be running out of his fascination with modern weapons, fine dining, glamorous women or the IRA but he appears to be slipping on plot and character development. Sean Dillon makes Doc Savage and Dirk Pitt look like pikers. And this curious extension of gentlemanly methods for attempting to kill one another -- sending a crazed assassin and then both sides meeting later at the Savoy to exchange notes -- strains credulity.Higgins has done some first-rate work. Had this been published twenty-five years ago, this might have made a difference. It wasn't and it doesn't.
[EX A]: Negative

[EX Q]: I was installing these chips in a G4 Sawtooth macintosh computer and the chips did not work. I had kernel panics that eventually left the operating system unusable. The hard drive had to be reformatted and the OS re-installed. A great headache and PITA. I need to return these memory modules, how would I do that.best regards,vilppu
[EX A]: Negative

[EX Q]: I bought this mattress as a spare guest bed for our vacation condo. I was delighted to see it described as being 80"x40"(a twinXL). It arrived and the box clearly stated 80x40 dimensions so put it in the closet for future use. Just pulled it out of the closet 3months late and inflated the mattress only to find it is a standard twin measuring 32"x72". Nothing close to the stated dimensions noted in the product description and on the box.
[EX A]:
Negative