Who got the pole position if the supporting is USAC National Midget Series?
CREATE TABLE table_25459168_2 (pole_position VARCHAR, supporting VARCHAR)
SELECT pole_position FROM table_25459168_2 WHERE supporting = "USAC National Midget Series"
### Context: CREATE TABLE table_25459168_2 (pole_position VARCHAR, supporting VARCHAR) ### Question: Who got the pole position if the supporting is USAC National Midget Series? ### Answer: SELECT pole_position FROM table_25459168_2 WHERE supporting = "USAC National Midget Series"