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1 - ∞
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Each Of:
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0 - ∞
publicationDate
Allows Extra Properties:
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@https://www.wikidata.org/wiki/EntitySchema:E43#reference
1 - ∞
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reference999
Only One Of:
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Each Of:
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iri
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Date-Time
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Each Of:
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1 - 1
iri
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