행사가

event

→ 행사
phrase Rare #30,741
event 가 marks 행사가 as the subject of the sentence.
KO: 오늘 행사가 있어요.
EN: There's an event today.

오늘 밤 행사가 있는 것 같다

It looks like there’s an event tonight.

— 포풍추영 (2025)

행사가 있어요.

There is an event.