who are the writers of the episode whose production code is 176206?
CREATE TABLE table_2866509_1 (
    written_by VARCHAR,
    production_code VARCHAR
)
SELECT written_by FROM table_2866509_1 WHERE production_code = 176206
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 writers of the episode whose production code is 176206? ### Input: CREATE TABLE table_2866509_1 (
    written_by VARCHAR,
    production_code VARCHAR
) ### Response: SELECT written_by FROM table_2866509_1 WHERE production_code = 176206