user: Question: What is the duration of the commissioner from the Zeeland province?
Columns: ['Province', 'Commissioner', 'Assumed office', 'Duration', 'Party', 'Born']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Drenthe', 'Jacques Tichelaar', 'May 1, 2009', '4years, 276days', 'Labour Party', 'January 2, 1953 (age61)']
SQL:

assistant: SELECT "Duration" FROM "Table" WHERE "Province" = 'Zeeland';