主催 しゅさい
shusai

Noun
Suru Verb

1. sponsorship (i.e. conducting under one's auspices); promotion; organizing; organising; hosting; staging

Transitive
今日 きょうのパーティーは だれ主催 しゅさいなの?
kyōno pātiiwa darega shusainano
Who was in charge of today's party?