sono paatii-ni-wa gesuto-ga nizyuugo-nin i-ta . Junya-wa [Ayaka-ga kare-ni gesuto-o san-nin syookaisitekure-ta no]-o kookyuuna resutoran-ni (zenbu/zen-in) syootaisi-ta .
that party-at.TOP guest.NOM twenty five.CL exist.PAST Junya.TOP Ayaka.NOM he.DAT guest.ACC three.CL introduce.PAST NO.ACC fancy restaurant-to all/all.CL invite.PAST
There were twenty five guests at the party. Ayaka introduced three (of the) guests to Junya and he invited (all of) them to a fancy restaurant.