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_63 (type VARCHAR, regulatory_citation VARCHAR)
### Question:
what is the type when the regulatory citation is 40 cfr 50.9(a)?
### Answer:
SELECT type FROM table_name_63 WHERE regulatory_citation = "40 cfr 50.9(a)"