What average week number had the Chicago bears as the opponent?
CREATE TABLE table_name_58 (week INTEGER, opponent VARCHAR)
SELECT AVG(week) FROM table_name_58 WHERE opponent = "chicago bears"
### Context: CREATE TABLE table_name_58 (week INTEGER, opponent VARCHAR) ### Question: What average week number had the Chicago bears as the opponent? ### Answer: SELECT AVG(week) FROM table_name_58 WHERE opponent = "chicago bears"