그건 아니고

that's not it

→ 그것+은
phrase Common #3,973
that's not it Often used to correct or disagree with something; with 아니고, it can lead into an explanation or a contrasting point.
KO: 그건 아니고, 다른 방법이 있어요.
EN: That's not it; there's another way.

그건 아니고

No, that's not it.

— 허공에의 질주 (1988)