SELECT administrative_district FROM table_name_76 WHERE pre_1009_province = "gwannae -do" AND post_1009_province = "seohae -do"
Distrik administratif mana yang memiliki provinsi pra -1009 Gwannae -do dan provinsi seohae -do pasca -1009?
CREATE TABLE table_name_76 (administrative_district VARCHAR, pre_1009_province VARCHAR, post_1009_province VARCHAR)