user: Question: What was the away team at the match where the crowd was larger than 30000?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Melbourne', '17.17 (119)', 'North Melbourne', '14.5 (89)', 'MCG', 9495.0, '15 May 1926']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Crowd" > 30000.0;