CREATE TABLE table_54298 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What is the margin of victory for the winning score of 10 (71-65-68-70=274)?
SELECT "Margin of victory" FROM table_54298 WHERE "Winning score" = '−10 (71-65-68-70=274)'
SELECT "Margin of victory" FROM "table_54298" WHERE "Winning score" = '−10 (71-65-68-70=274)'