Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best of the Batch

Having scanned all the books available on the subject, there's no doubt in my mind that this is the absolute best book you can find for anyone interested in knowing more about Harry and what Rowling had in mind when she wrote those fabulous books. It's not only a great read and a great gift to give anyone who loves the Potter books, it's a cleverly designed and illustrated guide that brings the whole word of Harry Potter to life in a way no other book does. This must have been a labor of love for Colbert and anyone who has ever done any research on a subject as complicated as this one can only admire how well he's pulled it off. It's sure to keep the interest going until the next Potter book arrives. Clearly, a "must have" for anyone who's into the Harry Potter world. Applause for the author!