What is the combined of Crowd when richmond played at home?
CREATE TABLE table_name_91 (crowd VARCHAR, home_team VARCHAR)
SELECT COUNT(crowd) FROM table_name_91 WHERE home_team = "richmond"
### Context: CREATE TABLE table_name_91 (crowd VARCHAR, home_team VARCHAR) ### Question: What is the combined of Crowd when richmond played at home? ### Answer: SELECT COUNT(crowd) FROM table_name_91 WHERE home_team = "richmond"