user: Question: How many release dates have a Country of west germany, and a Release format of vinyl?
Columns: ['Release format', 'Country', 'Label', 'Cat. No.', 'Release date']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Vinyl', 'West Germany', 'Ariola', '203 450-320', 1981.0]
SQL:

assistant: SELECT COUNT("Release date") FROM "Table" WHERE "Country" = 'west germany' AND "Release format" = 'vinyl';