It is an anonymous work, pseudonymous or posthumous work and 50 years have passed since the date of its publication (or creation, whatever date is the latest)
It is a audiovisual or sound recording and 50 years have passed since the date of its publication
It is a collective work, and 50 years have passed since the date of its publication
It is another kind of work, and 70 years have passed since the year of death of the author (or last-surviving author)
It is one of "any official text of a legislative, administrative or legal nature, or any translation thereof"
