user: Question: What is Essendon's home team that has an away crowd size larger than 19491?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Hawthorn', '25.13 (163)', 'South Melbourne', '14.21 (105)', 'Glenferrie Oval', 13369.0, '21 June 1969']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Crowd" > 19491.0 AND "Home team" = 'Essendon';