Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The best Chomsky Lecture I've heard so far.

Speaking a length to a sympathetic audience at Harvard, the real Noam lets his hair down and gives qualifications and background for many of his statements that we are used to hearing. Lot's of references as well. It's a relaxed conversational tone; if your car has a cd player this will put you in a great mood on your way to work.