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_12720275_1 (rank__csa_ VARCHAR)
### Question:
What is the 2007 estimate when the rank (csa) is 4
### Answer:
SELECT 2007 AS _estimate FROM table_12720275_1 WHERE rank__csa_ = "4"