Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Real Treat

A must-buy for those who want challenging, clever and sometimes witty crossword puzzles. I'd rate the degree of difficulty as being just below that of The Washington Post. Lots of Hollywood references make it a bit more fun for those who love old movies. I also appreciated the fact that every LA Times puzzle book I've worked to date contains actual words, not misspellings or created ones.