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

[EX Q]: Over the winter, i seem to gain alot of weight. As a high school quarterback, that is not acceptable. Last summer, i think i went from 160 to 150. That's my gross weight loss. I'm not even talking about how much fat i lost. I gained a good amount of muscle over the summer, so i probably lost over 15 lbs of fat. I got my six pack back, and life was great. After the season, i just quit, and now my six pack is back in the fridge. I'll probably order some up next week and start again. These are great, and the results are amazing.
[EX A]: Positive

[EX Q]: An extremely helpful gem on a complex subject of second century religious authority and textual use. For anyone serious about this period and the interelation of cultures, this book is essential. Is it complex and detailed? Of course, it must be to argue the point. Should you buy it? Yes, unless you want to keep running back to the library. I write this only after thoroughly disagreeing with the review above.
[EX A]: Positive

[EX Q]: I was really looking forward to using this item. However, upon opening it I was overcome with a strong chemical odor. The packaging says "for novelty only" which means, it's not safe. I did some research and found out this could actually cause cancer. Of course, I can't even return the stupid thing eventhough I never used it. Shame on you people for selling shoddy products that can esentially kill people.
[EX A]:
Negative