user: Question: What is the qual for rank 18 in 1964?
Columns: ['Year', 'Start', 'Qual', 'Rank', 'Finish', 'Laps']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1955', '26', '136.981', '26', '29', 53.0]
SQL:

assistant: SELECT "Qual" FROM "Table" WHERE "Rank" = '18' AND "Year" = '1964';