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_65 (hanyu_pinyin VARCHAR, density___km²_ VARCHAR)
### Question:
What is the Pinyin for the item that has a density of 77?
### Answer:
SELECT hanyu_pinyin FROM table_name_65 WHERE density___km²_ = "77"