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

[EX Q]: My husband and I were not able to attend a birthing class, so the doctor suggested we rent/buy a video. We decided on this one, and although the 'teacher' was a bit corny it was helpful. I especially liked that you could fast forward and skip parts! All in all it was a worthwhile purchase and proved helpful to us both.
[EX A]: Positive

[EX Q]: This book has solved the problems we had while trying to manage my son's diabetes.You can find all answers in diabetes management.
[EX A]: Positive

[EX Q]: The single, "Galang" explodes like computerized firebombs! All quaking synths and bells and whistles and a beat that would get the dead to dance. Those who are expecting more run-of-the-mill "crunky" R&B can look elsewhere for that dreck. The album's combination of dancehall, Brazilian funk, grime and house with M.I.A.'s chirpy, sexy raps is hands down one of the best albums of the year. Own it now!!!
[EX A]:
Positive