What's the period of a rock album released in 1973?
CREATE TABLE table_name_83 (
    period_active VARCHAR,
    release_year_of_first_charted_record VARCHAR,
    genre VARCHAR
)
SELECT period_active FROM table_name_83 WHERE release_year_of_first_charted_record = 1973 AND genre = "rock"
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's the period of a rock album released in 1973? ### Input: CREATE TABLE table_name_83 (
    period_active VARCHAR,
    release_year_of_first_charted_record VARCHAR,
    genre VARCHAR
) ### Response: SELECT period_active FROM table_name_83 WHERE release_year_of_first_charted_record = 1973 AND genre = "rock"