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

Ex Input:
Excellent product. I was having difficulty hearing and also getting a comfottable fit with the included ear hook that came with my Jabra JX-10 Series II Bluetooth headset. I removed the hook and attached one of the 6 gels that came in the pack to the headset and found that the volume increased 40% and I was able to achieve a comfortable fit. The headset is small enough and light enough that the gel holds the headset in the ear. I was about to give up on this headset (and all earhook type Bluetooth headsets) prior to getting the gels. If you are looking for a comfortable (and econimical) alternative for earhook type headsets, I strongly recommend that you give these a try. They are well worth the price.

Ex Output:
Positive


Ex Input:
The book covers several generations, so with each generation you have to re-learn all the characters. It is difficult to keep track of who's who when every time you get to know the cast, 200 years suddenly pass and we're in the middle of a new crisis. I didn't read the whole series because of this -- it was obnoxious.

Ex Output:
Negative


Ex Input:
This is by far the worst movie I have ever seen! The plot was impossible to follow, the action confusing and flashy, and the film editing awful. For example, there is one sequence in which a motorcycle crashes through a chain link fence and the sound effect boingongong is heard, like a spring snapping. Ridiculous! Concept - Terrible, Acting - Worse, Execution - Rollerball looks like it was made in 2 weeks using 2 computers that didnt work. I reccommend that you see this movie, just so you can tell your friends you've seen the worst movie ever made!

Ex Output:

Negative