CREATE TABLE table_50869 ("Round" CLOB, "Location" CLOB, "Circuit" CLOB, "Date" CLOB, "Winning Driver" CLOB)

What was the round number for March 22?
SELECT "Round" FROM table_50869 WHERE "Date" = 'march 22'
SELECT "Round" FROM "table_50869" WHERE "Date" = 'march 22'