Taro-wa [[[Yokoga yoru-ni dinaa paatii-ni gesuto-o shootai-si-ta]-no]-o 3-nin] asa pro {? shookai-si-ta/ shookai-shite-i-ta}.
Taro-TOP Yoko-NOM evening-in dinner party-to guest-ACC invite-do-PAST-NL-ACC 3-CL morning introduce-do-PAST/ introduce-do-be-PAST
Yoko invited three guests to a dinner party in the evening and Taro ?(had already) introduced them to her in the morning.