user: Question: What is the smallest crowd that Footscray had as the away team?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Geelong', '15.13 (103)', 'Richmond', '10.11 (71)', 'Kardinia Park', 21840.0, '5 May 1956']
SQL:

assistant: SELECT MIN("Crowd") FROM "Table" WHERE "Away team" = 'Footscray';