What were the air-dates of the episodes before episode 4 that had a BBC One weekly ranking of 6?
CREATE TABLE table_69074 (
    "Episode No." real,
    "Airdate" text,
    "Total Viewers" real,
    "Share" text,
    "BBC One Weekly Ranking" real
)
SELECT "Airdate" FROM table_69074 WHERE "Episode No." < '4' AND "BBC One Weekly Ranking" = '6'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What were the air-dates of the episodes before episode 4 that had a BBC One weekly ranking of 6? ### Input: CREATE TABLE table_69074 (
    "Episode No." real,
    "Airdate" text,
    "Total Viewers" real,
    "Share" text,
    "BBC One Weekly Ranking" real
) ### Response: SELECT "Airdate" FROM table_69074 WHERE "Episode No." < '4' AND "BBC One Weekly Ranking" = '6'