user: Question: What is South Africa's margin of victory?
Columns: ['Year', 'Player', 'Country', 'Score', 'Margin of victory', "Winner's share ( $ )"]
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [2013.0, 'Matt Kuchar', 'United States', '276 (−12)', '2 strokes', 1160000.0]
SQL:

assistant: SELECT "Margin of victory" FROM "Table" WHERE "Country" = 'South Africa';