CREATE TABLE table_name_21 (career_sr VARCHAR2)

What is 1999, when 2003 is 'A', and when Career SR is '0 / 4'?
SELECT 1999 FROM table_name_21 WHERE 2003 = "a" AND career_sr = "0 / 4"
SELECT 1999 FROM "table_name_21" WHERE "0 / 4" = "career_sr" AND "a" = 2003