user: Question: Which type had an Unknown manufacturer?
Columns: ['Name', 'Type', 'Themed area', 'Manufacturer', 'Opened']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Australian Animal Presentation', 'Animal show', 'Australian Wildlife Experience', 'Dreamworld', '2009']
SQL:

assistant: SELECT "Type" FROM "Table" WHERE "Manufacturer" = 'Unknown';