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을 원한다고

that [someone] wants

→ 을
phrase Very common #1,417
that [someone] wants Used in reported speech; 을 marks the thing being wanted, and the surrounding sentence identifies who wants it or what they said.
KO: 그는 그것을 원한다고 말했다.
EN: He said that he wanted it.

내 가방을 원한다고?

You want my bag?

— 폴링 다운 (1993)

세나는 고약한 프랑스인이 전쟁을 원한다고 했죠

Sena said that the nasty Frenchman wants war, right?

— 세나: F1의 신화 (2010)

아침을 원한다고 정말 미안하군요

I'm really sorry for wanting breakfast.

— 폴링 다운 (1993)