This study is supported by Grant-in-Aid for Scientific Research (C) (Grant Number 18K00652) from the Japan Society for the Promotion of Science.
This is a revised version of the paper read at the 61st Summer Seminar of the English Research Association of Hiroshima on 8 August 2021.
著作権は,執筆者本人と広島大学英文学会に帰属するものとします。