user: Question: Which Tankers have a Hazmat of –, and Platforms of –, and a Staffing of Volunteer?
Columns: ['Brigade', 'Staffing', 'Type', 'Location', 'Pumpers', 'Tankers', 'Telebooms', 'Platforms', 'Cars', 'Hazmat']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text', 'text', 'text', 'text']
Sample row: ['Belmont', 'Integrated', 'Urban', 'Google Map', 1.0, 1.0, '–', '–', '–', '–']
SQL:

assistant: SELECT "Tankers" FROM "Table" WHERE "Hazmat" = '–' AND "Platforms" = '–' AND "Staffing" = 'Volunteer';