user: Question: What was the release date for Production Number 8181?
Columns: ['Title', 'Series', 'Director', 'Production Num.', 'Release date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['He Was Her Man', 'MM', 'Friz Freleng', '7636', '1937-01-02']
SQL:

assistant: SELECT "Release date" FROM "Table" WHERE "Production Num." = '8181';