user: Question: Who are the Runner(s)-up with a Margin of 3 strokes?
Columns: ['Year', 'Championship', '54 holes', 'Winning score', 'Margin', 'Runner(s)-up']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1954.0, 'The Open Championship', 'Tied for lead', '−9 (72-71-69-71=283)', '1 stroke', 'Bobby Locke , Dai Rees , Syd Scott']
SQL:

assistant: SELECT "Runner(s)-up" FROM "Table" WHERE "Margin" = '3 strokes';