CREATE TABLE table_13423 ("Date" TEXT, "Tournament" TEXT, "Winning Score" TEXT, "Margin of Victory" TEXT, "Runner ( s ) -up" TEXT)

What's the winning score on Feb 12, 1978?
SELECT "Winning Score" FROM table_13423 WHERE "Date" = 'feb 12, 1978'
SELECT "Winning Score" FROM "table_13423" WHERE "Date" = 'feb 12, 1978'