CREATE TABLE table_name_7 (date_of_birth__age_ VARCHAR, position VARCHAR, club_province VARCHAR)

When was the queensland reds lock player born?
SELECT date_of_birth__age_ FROM table_name_7 WHERE position = "lock" AND club_province = "queensland reds"
SELECT "date_of_birth__age_" FROM "table_name_7" WHERE "club_province" = "queensland reds" AND "lock" = "position"