Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Worst Way to Learn a Language!

We were required to purchase this waste of paper for my Persian I course. The problem with it is that it is written linguistically. It is not meant for someone to crack it open, read and learn in a self-study fashion. In fact, it has been useless in class as well. Our teacher insists we refer to it, but everyone gets blank stares when he says that because we know it won't help.