Tetsuya Sakai Yoshimi Saito Yumi Ichimura Makoto Koyama Tomoharu Kokubu Toshihiko Manabe ASKMi: A Japanese Question Answering System based on Semantic Role Analysis. 215-231 2004 RIAO conf/riao/2004 db/conf/riao/riao2004.html#SakaiSIKKM04