What is the average crowd size at Princes Park?
CREATE TABLE table_name_84 (crowd INTEGER, venue VARCHAR)
SELECT SUM(crowd) FROM table_name_84 WHERE venue = "princes park"
### Context: CREATE TABLE table_name_84 (crowd INTEGER, venue VARCHAR) ### Question: What is the average crowd size at Princes Park? ### Answer: SELECT SUM(crowd) FROM table_name_84 WHERE venue = "princes park"