user: Question: What is the lowest lap with a rank of 30?
Columns: ['Year', 'Start', 'Qual', 'Rank', 'Finish', 'Laps']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1966', '24', '159.794', '15', '28', 0.0]
SQL:

assistant: SELECT MIN("Laps") FROM "Table" WHERE "Rank" = '30';