user: Question: What was the winning score for the tournament with a margin of victory of 7 strokes?
Columns: ['Date', 'Tournament', 'Winning score', 'To par', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['5 May 2002', 'Compaq Classic of New Orleans', '68-65-71-67=271', '−17', '4 strokes', 'Dudley Hart , Geoff Ogilvy']
SQL:

assistant: SELECT "Winning score" FROM "Table" WHERE "Margin of victory" = '7 strokes';