거였어요

was; was the case; was what someone/something was

→ 것
phrase Uncommon #10,270
was; was the case; was what someone/something was A polite conversational form of 것이었어요, often used after a noun, verb, or descriptive phrase to explain what something was or what someone intended. In expressions such as -는 거였어요, it can mean “was what [someone] did/intended” or “was supposed to.”
KO: 내 평생의 꿈은 나만의 공연을 갖는 거였어요.
EN: My lifelong dream was to have a performance of my own.

발자크를 위한 거 였어요

It was for Balzac.

— 400번의 구타 (1959)

당신 거 였어요?

Was it yours?

— 특별한 날 (1977)

어쩔 수 없는 운명 같은 거 였어요

It felt like an unavoidable fate.

— 문라이즈 킹덤 (2012)

날 보고 짓는 거 였어요

You were smiling at me.

— 저수지의 개들 (1992)

스스로 거 였어요

I came here on my own.

— 연인 (2004)