user: Question: Who is the Head Coach of the team whose President is Mario Volarevic?
Columns: ['Team', 'Head Coach', 'President', 'Home Ground', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Burleigh Heads Bulldogs Soccer Club', 'Colin Phelan', 'Steve Kazmer', 'Pizzey Park, Miami', 'Miami']
SQL:

assistant: SELECT "Head Coach" FROM "Table" WHERE "President" = 'Mario Volarevic';