나온 게

that … came out

→ 나오다
phrase Rare #25,321
that … came out 나온 is the past form of 나오다, meaning “to come out” or “to appear.” 게 is a shortened form of 것이 and turns the clause into “the thing/fact that …”; the exact translation depends on context.
KO: 문밖으로 나온 게 누구야?
EN: Who came out the door?