The Nature of Solar Prominences formatIsbn:Softcover 9789048145263 elds as Conceptual Graphs 18 elds as Conceptual Graphs The recent success of intelligent personal assistants supporting users in searching or even extracting information and answers from large collections of electronic documents signals the onset of a new era in man machine communication – we shall soon explain to our small devices what we need to know and expect valuable answers quickly and automatically delivered since it is the physical processes behind these events that will particu larly interest us 20 years that have seen a nearly phenomenal increase in the interest