Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_27714985_1 (production_code_s_ INTEGER, written_by VARCHAR)
### Question:
What is the maximum production code of an episode written by Patty Lin?
### Answer:
SELECT MAX(production_code_s_) FROM table_27714985_1 WHERE written_by = "Patty Lin"