user: Question: What is Busan's rank?
Columns: ['Rank', 'City', 'Population', 'Country', 'Area (km²)']
Types: ['real', 'text', 'real', 'text', 'real']
Sample row: [1.0, 'Tokyo', 36669000.0, 'Japan', 13500.0]
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "City" = 'Busan';