user: Question: What was the lowest highest attendance for the Dumbarton team?
Columns: ['Team', 'Stadium', 'Capacity', 'Highest', 'Lowest', 'Average']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['East Fife', 'Bayview Stadium', 2000.0, 1300.0, 540.0, 769.0]
SQL:

assistant: SELECT MIN("Highest") FROM "Table" WHERE "Team" = 'Dumbarton';