What is Erwin Sommer's average position?
CREATE TABLE table_name_18 (position INTEGER, pilot VARCHAR)
SELECT AVG(position) FROM table_name_18 WHERE pilot = "erwin sommer"
### Context: CREATE TABLE table_name_18 (position INTEGER, pilot VARCHAR) ### Question: What is Erwin Sommer's average position? ### Answer: SELECT AVG(position) FROM table_name_18 WHERE pilot = "erwin sommer"