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_58 (Id VARCHAR)
### Question:
What is the 2011 when the 2007 is a, and the 2012 is sf?
### Answer:
SELECT 2011 FROM table_name_58 WHERE 2007 = "a" AND 2012 = "sf"