Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Masterpiece

Every second of Zatoichi is worth viewing with concentration. From the overall story lines, to the individual character profiles, and the way Shintaro Katsu builds Zatoichi as the movie(s) progress. The subtle humor and his physical presence are terrific. His mastery with the sword and his style of fighting are classic. And of course the message...