Book review: interactive multi-modal question-answering Antal van Den Bosch and Gosse Bouma (editors) (*Tilburg University and University of Groningen) Berlin: Springer (theory and applications of natural language processing series, edited by eduard hovy), 2011, xii+279 pp; hardbound, isbn 978-3-642-17524-4, $124.00; e-book, isbn 978-3-642-17525-1; paperbound, $24.95 or £24.95 to members of subscribing institutions