| http://www.w3.org/ns/prov#value | - Provided that where the identity of the author of any such work, or in the case of a work of joint authorship, of any of the authors, is known to the library, museum or other institution, as the case may be, the provision of this clause shall apply only if such reproduction is made at a time more than fifty years from the date of the death of the author or, in the case of a work of joint authorshi
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