Johnwa [dono gakuseiga Smith senseini atta ka] sitteiruga [Brown senseiniwa (*sorega) dono gakuseiga ka] siranai.
John-Top which student-Nom Smith prof.-Dat meet-past Q know-but Brown prof.-Dat-Top (it-Nom) which student-Nom Q know-not
John knows which student met Prof. Smith, but (he) doesn't know Prof. Brown, which student (it is).