CREATE TABLE table_71517 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner-up" CLOB)

Which runner-up has a 10 strokes margin of victory?
SELECT "Runner-up" FROM table_71517 WHERE "Margin of victory" = '10 strokes'
SELECT "Runner-up" FROM "table_71517" WHERE "Margin of victory" = '10 strokes'