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_21926985_2 (national_rank INTEGER, company_name VARCHAR)
### Question:
What is the national rank of Windstream?
### Answer:
SELECT MIN(national_rank) FROM table_21926985_2 WHERE company_name = "Windstream"