Which actor played on Home and Away for 20 years?
CREATE TABLE table_name_21 (
    actor VARCHAR,
    duration VARCHAR,
    soap_opera VARCHAR
)
SELECT actor FROM table_name_21 WHERE duration = "20 years" AND soap_opera = "home and away"
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 actor played on Home and Away for 20 years? ### Input: CREATE TABLE table_name_21 (
    actor VARCHAR,
    duration VARCHAR,
    soap_opera VARCHAR
) ### Response: SELECT actor FROM table_name_21 WHERE duration = "20 years" AND soap_opera = "home and away"