PROLEG を用いた判例法理の実装 ~転得者が存在する場合の背信的悪意者の法理の実装~ Implementation of precedents using PROLEG system mainly focused on the topic of subsequent acquirer from betrayer 西貝 吉晃 1 古川 昂宗 1 佐藤 健 1,2 Yoshiaki Nishigai1 , Takamune Kogawa1 , and Ken Satoh1,2 1 国立情報学研究所 1 National Institute of Informatics 2 総研大 2 SOKENDAI Abstract: We have been researching and developing a computer simulation system of Japanese civi