Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Know What You Are Buying (And Why You Need It)

I like Shawn Trautman's dance-instruction videos very much, but it gets expensive to buy all of the pieces that you must study to have confidence in the ballroom setting. My motive in buying the sampler DVD (and I have several of his other samplers) was to show my father what the Cha Cha, Salsa and Tango looked like. (Dad protested that he could already do the Foxtrot and I did not expect him to get much use from the Hustle steps -- because it is a fairly complex dance with many different steps.) We decided to concentrate on three dances: a slow-tempo [rumba], medium-tempo [cha cha] and fast-tempo dance [Salsa]. The product is introductory and does not teach many steps since the DVD is 77 minutes long, there are five dances to showcase and there is generic introductory material that eats up bandwidth.