user: Question: In the tournament where Stuart Appleby was the runner-up, what was the margin of victory?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Jan 13, 1987', 'Phoenix Open', '–16 (67-69-65-67=268)', '2 strokes', 'Hal Sutton']
SQL:

assistant: SELECT "Margin of victory" FROM "Table" WHERE "Runner(s)-up" = 'Stuart Appleby';