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_19 (role VARCHAR, first_us_national_tour VARCHAR)
### Question:
Which Role has a First US National Tour of roger bart?
### Answer:
SELECT role FROM table_name_19 WHERE first_us_national_tour = "roger bart"