Instruct: Classify a review as either positive or negative.
Query: Best Thing Since Sliced Bread

I love this book light! I use it nearly every night, it doesn't fall off the book, all I have to do is lift it while I turn the page and lay it back down. It illuminates the entire page and doesn't bother my husband. The batteries last a long time and are easy to change. It has changed my reading life!