To enable a person to effectively create a document based on image data or audio data of a recorded meeting or a recorded lecture and also a person who creates the minutes of a meeting or a participant to browse a summarized document with images or voices so that a plurality of persons can effectively perform documentation.The audio/image inputting means 10 generates image data by recording a meeting and audio data by recording the contents of the meeting. The document inputting means 20 generates document data including a drafted minutes of a meeting or the like inputted by a person who creates the minutes of a meeting. The relationship deriving means 50 generates correspondence table data by deriving relationship between voices or images and a document based on audio data or image data and document data. The relationship presenting means 60 displays voices or images and a document in association with each other based on the correspondence table data.