Instruct: Classify a review into positive or negative sentiment.
Query: Best Dictionary Less Than 20 Pounds

This is the best dictionary that I have found that weighs less than 20 pounds. This was highly recommended in my college English grammar courses, but I compared all of them myself. If you want a smaller volume, get this one. If you want a larger bookshelf volume, but not as large as the Oxford English Dictionary (OED), get the Merriam-Webster's Collegiate Dictionary (10th edition). That, in addition to this book, would be an excellent combination. This book has good descriptions and comparisons of usage, exactly what college students need, especially if they want to fit it into their backpack of books.