user: Question: Name the captain for Ben Sigmund
Columns: ['Club', 'Australian Marquee', 'International Marquee', 'Junior Marquee player', 'Captain', 'Vice-Captain']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Adelaide United', 'None', 'None', 'None', 'Eugene Galeković', 'Cássio']
SQL:

assistant: SELECT "Captain" FROM "Table" WHERE "Vice-Captain" = 'Ben Sigmund';