Kei Yoshimura¹, Panduka Neluwala², Kinya Toride¹, Mika Ichino³, Kooiti Masuda⁴ and Junpei Hirano⁵, (1)The University of Tokyo, Institute of Industrial Science, Kashiwa, Japan, (2)University of Peradeniya, Peradeniya, Sri Lanka, (3)ROIS-DS Center for Open Data in the Humanities, Tokyo, Japan, (4)Tokyo Metropolitan University, Hachioji, Japan, (5)Teikyo University, Faculty of Liberal Arts,Department of History, Tokyo, Japan