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

Example Input: After reading all the great reviews on this product on Amazon, I decided to go for this. I don't typically have good results from diet products, but I figured I'd give it a shot. I've been taking these for 3 weeks, as directed, and I might as well have been taking sugar pills for all the more this is doing for me. I felt like my appetite increased, I haven't lost any weight at all - in fact I've been fluctuating up and down 3 pounds for the past couple of weeks. I gave this two stars because I didn't feel the anxiety or sleeplessness that some people complained about, but I'm still disappointed. I was hoping I'd find something that actually worked!
Example Output: Negative

Example Input: I bought this charger thinking that it would be compatible with my late 2005 iBook G4. The description page has nothing stating that it is not for ibook G4 but only for Powerbook G4 and ibook G3. Also, after only about 3 weeks of use the charger died completely. This is by far the worst charger I have ever had. Pros: quick ship Cons: incorrect description, lack of durability
Example Output: Negative

Example Input: If you take the ear bud off the Jawbone and try to attach the Jabra Eargels, they won't stay on very well. Instead, notice that the Jawbone comes with two round earbuds that appear to be identical. Tear the rubber shroud off one of them to expose the round plastic piece inside of it. Take this plastic piece and lock it onto the Jawbone (read user's manual). The Eargels will slip over this piece and hold quite firmly to the headset. Notice also that the Eargels have a square notch on the inside. Point the notch toward the back of the Jawbone. This will align the piece properly with the ear.The Eargels allow the Jawbone to be securely held in the ear without the annoyingly difficult earloop, but cause a little discomfort in my ear because I have to use the larger pieces. With the earloop, I can use the smallest piece and the Eargels are very comfortable.
Example Output:
Positive