CREATE TABLE table_39482 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the margin of victory when the winning score was 12 (66-67-64-71=268)?
SELECT "Margin of victory" FROM table_39482 WHERE "Winning score" = '−12 (66-67-64-71=268)'
SELECT "Margin of victory" FROM "table_39482" WHERE "Winning score" = '−12 (66-67-64-71=268)'