user: Question: What kind of Modern equivalent that has a Pre-1009 province of Sakbang -do, and a Province of Silla of Sakju?
Columns: ['Province of Silla', 'Administrative district', 'Pre-1009 province', 'Post-1009 province', 'Modern equivalent']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Hanju', 'Gyeonggi ( 京畿 )', 'Gyeonggi', 'Gyeonggi', 'Kaesŏng']
SQL:

assistant: SELECT "Modern equivalent" FROM "Table" WHERE "Pre-1009 province" = 'Sakbang -do' AND "Province of Silla" = 'Sakju';