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

Ex Input:
An exellent study of the German Airforce from the fall of Sevastopol in the Crimea to its failure at Stalingrad. Very well written, with a clear analysis of the events. Well worth the money and it belongs in every major collection on World War II's Eastern Front.

Ex Output:
Positive


Ex Input:
I wish I could give this more then 5 stars. This concert tour was Tina's best concert. I almost did not buy this because I own this on video. When I recevied it, to my surprise, the DVD has four extra songs on it then the video. The songs are "Wildest Dreams" "Let's Stay Together" "Something Beautiful Remains" and "Better Be Good To Me" If anyone caught Tina on this tour, here is your chance to own the "complete" concert for ever!

Ex Output:
Positive


Ex Input:
I recomend this book to any young african american and women who are having problems at home and with their peers...Pick up this book...it will help alot. Wonderful book Sister Souljah

Ex Output:

Positive