user: ### NOW ANSWER:
Question: On what date did Epic label start its release?
Columns: ['Release format', 'Country', 'Label', 'Cat. No.', 'Release date']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Vinyl', 'West Germany 1', 'Ariola', '25 900 OT', 1978.0]
SQL:

assistant: SELECT SUM("Release date") FROM "Table" WHERE "Label" = 'Epic';