was ...?; could ... have been?
정말 나 였을까?
Was it really me?
— 20th Century Girl (2022)
그 산의 우리는 누구 였을까?
Who were we on that mountain?
— 안데스 설원의 생존자들 (2023)
정말 종이 였을까?
Was it really paper?
언제부터 난 타일러 였을까?
Since when was I Tyler?
— 파이트 클럽 (1999)