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_91 (tournament VARCHAR)
### Question:
What is the 2006 when the 2013 is 2r, and a Tournament was the us open?
### Answer:
SELECT 2006 FROM table_name_91 WHERE 2013 = "2r" AND tournament = "us open"