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_name_66 (hangul VARCHAR, hanja VARCHAR)
### Question:
What is the Hangul when the Hanja is 西, 徐?
### Answer:
SELECT hangul FROM table_name_66 WHERE hanja = "西, 徐"