Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The English is fun!

I play the lines in this book in blitz and correspondence - no OTB tests yet, but they will be coming up next year - and the results are quite encouraging. The only rub I've discovered are in a few of the Symmetrical English lines... he just missed some move orders and gave one line that can only be played OTB, not in correspondence. Highly recommended.