who are the writer of the series episode number 170?
CREATE TABLE table_22580855_1 (
    written_by VARCHAR,
    series_no VARCHAR
)
SELECT written_by FROM table_22580855_1 WHERE series_no = 170
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: who are the writer of the series episode number 170? ### Input: CREATE TABLE table_22580855_1 (
    written_by VARCHAR,
    series_no VARCHAR
) ### Response: SELECT written_by FROM table_22580855_1 WHERE series_no = 170