user: Question: Name the total number of ground for Essendon
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Ground', 'Date', 'Crowd']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Geelong', '4.10 (34)', 'Sydney', '6.11 (47)', 'Marrara Oval', 'Friday, 16 February', 8500.0]
SQL:

assistant: SELECT COUNT("Ground") FROM "Table" WHERE "Home team" = 'Essendon';