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_19908313_2 (_number INTEGER, crew_chief VARCHAR)
### Question:
What is the number of the truck that has the crew chief Billy Wilburn?
### Answer:
SELECT MAX(_number) FROM table_19908313_2 WHERE crew_chief = "Billy Wilburn"