PRESENTATION SUPPORT SYSTEM

On the basis of, e.g., input items, attribute values, and titles, their categories are analyzed by using a proper noun dictionary, a concept dictionary, and a numeric attribute name dictionary. On the basis of the analyzed categories, changes in attribute values are analyzed in accordance with inference rules, and a keyword for describing a background state of presentation is extracted. A background material suitable for presentation is selected from background materials such as images and sounds in accordance with the extracted keyword. The selected background material is displayed in combination with a graph which is formed in accordance with content data about an object to be presented.