Instruct: Classify Amazon reviews into positive or negative sentiment
Query: makes Czech even more difficult

(Note, the other review of this item is actually a review of a Berlitz package.)The audio tape in this package is the most bizarre and useless example of the genre I've encountered. It consists of extremely long and complex dialogs which no beginner could possibly follow, interspersed with relaxation exercises (?!?). Maybe the whole thing is a practical joke.