user: Question: What's the type for the brand Herceptin with an approval date of before 2006?
Columns: ['Antibody', 'Brand name', 'Approval date', 'Type', 'Target']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Alemtuzumab', 'Campath', 2001.0, 'humanized', 'CD52']
SQL:

assistant: SELECT "Type" FROM "Table" WHERE "Approval date" < 2006.0 AND "Brand name" = 'Herceptin';