CREATE TABLE table_name_19 (date VARCHAR2, city___state VARCHAR2, team VARCHAR2)

What is Date, when City / State is 'Mallala , South Australia', and when Team is 'R.J.MacArthur Onslow'?
SELECT date FROM table_name_19 WHERE city___state = "mallala , south australia" AND team = "r.j.macarthur onslow"
SELECT "date" FROM "table_name_19" WHERE "city___state" = "mallala , south australia" AND "r.j.macarthur onslow" = "team"