The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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Published works by known authors. Seventy years have passed since 1 January of the year following the year in which the author died (or, if there were joint authors, the year in which the author dying last died): Articles 31(1) and (2).
Published works by unknown authors. Seventy years have passed since 1 January of the year following the year in which the work was first disclosed: Article 31(3). (If the author becomes known during this time, the preceding paragraph applies.)
Unpublished works by unknown authors. Seventy years have passed since the date when the work was created, and 25 years have passed since 1 January of the year following the year in which the work was legally disclosed by a person other than the author: Articles 31(7) and 32.
Official works. It is a provision of law, some other legal instrument of state administration, a judicial or authority decision, an authority or other official announcement or document, or a standard or other like provision made obligatory by a legislative act: Article 1(4).
Facts and daily news. It consists of facts or daily news that serves as a basis for press information: Article 1(5).
Folklore. It is an expression of folklore: Article 1(7). (Note, however, that works of an individual and original nature that are inspired by folk art are subject to copyright.)