CREATE TABLE table_40223 ("Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT)

What is Winning Score, when Tournament is Joburg Open 1, and when Date is 17 Jan 2010?
SELECT "Winning score" FROM table_40223 WHERE "Tournament" = 'joburg open 1' AND "Date" = '17 jan 2010'
SELECT "Winning score" FROM "table_40223" WHERE "Date" = '17 jan 2010' AND "Tournament" = 'joburg open 1'