Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fantastic Video

If you really want to get your heart rate up, this video is excellent. I actually had to buy this video again because I wore out my old tape. Not only do you get a great workout, but you are working out to energizing/funky music and with a fantastic instructor. If you are not into those annoying instructors who love to smile and say things like 'you can do it' then this video is for you.