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_4 (reference VARCHAR, romaji_title VARCHAR)
### Question:
What is the reference for the romani title da.i.su.ki?
### Answer:
SELECT reference FROM table_name_4 WHERE romaji_title = "da.i.su.ki"