user: Question: For episode number 7, what was the numbers of original air dates?
Columns: ['№', '#', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [442.0, 1.0, '" Homer the Whopper "', 'Lance Kramer', 'Seth Rogen & Evan Goldberg', 'September27,2009', 'LABF13', '8.31']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "#" = 7.0;