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

Example Input: I have had the charger for more than two years. It charges AA batteries just fine, but has a huge problem securing smaller AAA batteries. To charge the smaller batteries you need to flip down the little button at the positive end. In the beginning one of the four AAA batteries would pop up, and now three out of the four won't hold. The problem is the flip mechanism became loose, and any horizontal pressure would push the buttons back up. What I have to do now is using duct tape and a segment of crayon, apply the crayon on the buttons, and wrap the tape around. You know how painful that is.
Example Output: Negative

Example Input: The Sansa View 8GB I received was faulty. The battery would not hold a charge and/or the player would not turn on. This happened within hours of opening the player packaging and attempting an initial full-charge of the player's battery. The battery is only chargeable via USB and I tried using a PC and an AC to USB adapter to charge it. There is no hard reset button like I have seen on other players (namely Cowon brand players) so it could not simply be reset.I decided to return the product for a refund because it did not seem worth the trouble of waiting for a new (or repaired) player. I was not very impressed with the build quality of the player. It felt and looked very prone to scratching or other damage if not treated with extreme care. Furthermore, I found another player that suited my personal needs and desires better than the Sansa View.
Example Output: Negative

Example Input: This is totally different from the "classic albums" series of DVDs that have come out which I love. This is a "classic album under review" which basically has a bunch of fat old guys talking about how great AC/DC is. The clincher for me was the fact that they had an AC/DC tribute band on to play the guitar riffs from this album. A TRIBUTE BAND?!?!? I'm sure that was great fun for those guys to do, but I think the people watching would rather see the actual band playing the songs. This DVD went on WAY too long and only had little snippets of the band playing live. Way too much filler for me and not what I thought this DVD was going to be. I do not recommend it.
Example Output:
Negative