What is the average crowd size for princes park?
CREATE TABLE table_name_97 (crowd INTEGER, venue VARCHAR)
SELECT AVG(crowd) FROM table_name_97 WHERE venue = "princes park"
### Context: CREATE TABLE table_name_97 (crowd INTEGER, venue VARCHAR) ### Question: What is the average crowd size for princes park? ### Answer: SELECT AVG(crowd) FROM table_name_97 WHERE venue = "princes park"