Which Commercial Operation has both a Gross Capacity of 417 mw and an Electricity Grid 27.12.1971?
CREATE TABLE table_name_48 (
    commercial_operation VARCHAR,
    gross_capacity VARCHAR,
    electricity_grid VARCHAR
)
SELECT commercial_operation FROM table_name_48 WHERE gross_capacity = "417 mw" AND electricity_grid = "27.12.1971"
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: Which Commercial Operation has both a Gross Capacity of 417 mw and an Electricity Grid 27.12.1971? ### Input: CREATE TABLE table_name_48 (
    commercial_operation VARCHAR,
    gross_capacity VARCHAR,
    electricity_grid VARCHAR
) ### Response: SELECT commercial_operation FROM table_name_48 WHERE gross_capacity = "417 mw" AND electricity_grid = "27.12.1971"