| http://www.w3.org/ns/prov#value | - A year followed by a hyphen (1946- ) limits retrieval to information published in the year specified or any succeeding year, a year preceded by a hyphen ( -1945) limits retrieval to sources published up to and including the year specified, and a year followed by a hyphen and a subsequent year (1939-1945) limits retrieval to sources published in those or any intervening years.
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