user: Question: What zone has camp type D/S in area BL9?
Columns: ['Area', 'Name', 'Zone', 'Group(s)', 'Parties', 'Max People', 'Camp Type']
Types: ['text', 'text', 'text', 'real', 'real', 'real', 'text']
Sample row: ['AA9', 'Badger', 'Primitive', 1.0, 1.0, 17.0, 'A/L']
SQL:

assistant: SELECT "Zone" FROM "Table" WHERE "Camp Type" = 'D/S' AND "Area" = 'BL9';