An information processing apparatus includes a morphological analysis unit, a feature-value vector generation unit, and a degree-of-certainty calculation unit. The lead frame includes a chip mounted section and a plurality of lead sections. A peritoneal retractor and a guide member may be first inserted to establish the path between the tissues and fascia, and one or more intermediate cannulas may be temporarily inserted over the guide member to dilate the tissues prior to insertion of the main cannula. Another aspect includes calculating, using a plurality of calculating methods, a plurality of degrees of relevance of a second electronic file to the first electronic file based on the stored history. In perfecting mode, one of the edges of the sheet material is gripped at an angular offset before the transfer centerline between the reversing drum and the storage drum, before the edge of the sheet material fixed to the storage drum is released.