CREATE TABLE table_5408 ("Date" CLOB, "Venue" CLOB, "Score" CLOB, "Result" CLOB, "Competition" CLOB)

What was the date of the friendly competition with a score of 4-0?
SELECT "Date" FROM table_5408 WHERE "Competition" = 'friendly' AND "Score" = '4-0'
SELECT "Date" FROM "table_5408" WHERE "Competition" = 'friendly' AND "Score" = '4-0'