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

[Q]: This product does not work with my ibook G4. As stated by some earlier reviews by other customers, the charger toggles between charging and not charging. Occasionally, if it is left on, it will continuously charge. I thought about keeping it, but it is unreliable and there are other third party options for $10 more.This one is going back to Amazon.
[A]: Negative


[Q]: This video is fine for ballroom dancers, but it has nothing to do with the authentic Argentine Tango. Even ballroom dancing has now a separate category for Argentine Tango. Unfortunately, this video is not that. That's why, I rate it at 1.
[A]: Negative


[Q]: WHEN WILL #5 COME OUT? THERE HAS TO BE A #5. I WILL READ EVERY BOOK YOU WRITE IF THEY ARE LIKE THE "AYLA" JOURNEY.
[A]:
Positive