By Joseph Neese / Arts & Review EditorOn Oct. 20, author J.K. Rowling appeared in front of a packed audience of Scholastic Books sweepstakes winners at Radio City Music Hall to read from the seventh installment of Harry Potter, answer questions, and sign books. During the night's question-and-answer session, a young girl asked Rowling about the love life of esteemed Hogwarts headmaster, Albus Dumbledore.