John-wa [ Mary-ga NAni-o shikago-no furenchi-resutoran-de mawari-no-hito-ni tomerareru-made tabeta-ka ] i mademo shiritagatteiru ]
what-Acc Chicago-Gen French-restaurant-at surrounding.people-by stopped-until ate-CompWh
John still wants to know [ what1 Mary ate t 1 at the French restaurant in Chicago until she was stopped by the people on the scene ].