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

Example Input: Una excelente guía para todos aquellos que deseen concer más aobre el vino y su mundo. De forma amena y sencilla explica los principales conceptos y orienta sobre temas básicos como la elección del vino corecto, principales tipos de vino, cómo comprar vino en restaurantes o tiendas, etc.
Example Output: Positive

Example Input: I only used it a couple of times, a tiny bit of water leaked into the battery compartment and now it is rusted and won't turn on.
Example Output: Negative

Example Input: I have an 'old' ibook from 2001, white, and even though it says for G4 on the package of the charger, it works just fine with mine. I actually like it better than the original one from Mac, smaller and somewhat handier. Glad I didn't have to pay 80$ to fix that ! :-)
Example Output:
Positive