user: Question: Which Runs has a Rank of =5 and an Opponent of South Australia?
Columns: ['Rank', 'Runs', 'Opponent', 'Venue', 'Season']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', '18', 'Victoria', 'MCG , Melbourne', '1868/69']
SQL:

assistant: SELECT "Runs" FROM "Table" WHERE "Rank" = '=5' AND "Opponent" = 'South Australia';