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

Ex Input:
Naader was my first yoga teacher. When we moved out of state, this video was my link to the best yoga routine I have ever done. I tried other instructors and other videos, but Naader's approach is the best -- a balanced mix of yoga instruction and inspiration. I have shared this tape with many friends (who then bought their own copy!) and they all agree that Naader's instructions are easy to follow and the pace is slow enough that beginners can figure out what is going on before the next pose; but not so slow that experienced students get bored. Furthermore, since he is doing the poses along with the student, he knows just when to offer that extra word of encouragement when you are about to give up! I find something new to ponder each time I listen to this tape. Naader's words are from the heart and they reach out to touch your heart as well as your body. Buy this tape and use it!!

Ex Output:
Positive


Ex Input:
I was sold this item only to learn, after opening the corresponding Web site necessary for eMarker function, that Sony was terminating the corresponding Web service in 45 days!!A great idea but no support.

Ex Output:
Negative


Ex Input:
I got interested in reading this book after viewing the Masterpiece Theater showing of the Forsyte Saga. It was interesting to compare the movie's interpretation of the book, and it gave a little more insight into the motivations of each of the characters. Overall a good book.

Ex Output:

Positive