CREATE TABLE table_70851 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What is the Margin of victory on aug 11, 2002?
SELECT "Margin of victory" FROM table_70851 WHERE "Date" = 'aug 11, 2002'
SELECT "Margin of victory" FROM "table_70851" WHERE "Date" = 'aug 11, 2002'