A path table operation is performed while updating the reference positions. Thus, there can be obtained a resin composition containing a photosensitive silicone compound that provides a material suitable for a rewiring layer or a buffer coat material of LSI chip, less in a film loss between before and after curing and improved in the stickiness of pre-exposure stage. The water swellable yarn is selected according to the following equation:VwVTF=kVt+Rin which Vw is the volume of the water swellable yarn after swelling upon contact with water; VTF is the total free volume in the retaining element; k is a constant\u2267180; R is a constant\u22671.