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Wikidata
:
WikiProject Supertemplates/doc/P38
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Wikidata:WikiProject Supertemplates
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Documentation science
Has list
Persons
(person)
Places
(human settlement)
Artworks
(work)
Classification scheme
list of Wikidata properties
(
related category
)
list of Wikidata identifiers
(
related category
)
...
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Wikidata qualifier
•
allowed qualifiers constraint
start time
(P580)
:
time an entity begins to exist or a statement starts being valid
end time
(P582)
:
moment when an entity ceases to exist or a statement stops being valid
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Property constraint
subject type constraint
(Q21503250)
:
type of constraint for Wikidata properties: used to specify that the item described by such properties should be a subclass or instance of a given type
→
class
→
human-geographic territorial entity
•
fictional country
value-type constraint
(Q21510865)
:
type of constraint for Wikidata properties: used to specify that the value item should be a subclass or instance of a given type
→
class
→
currency
•
fictional currency
contemporary constraint
(Q25796498)
:
type of constraint for Wikidata properties: used to specify that the subject and the object have to coincide or coexist at some point of history
currency
(P38)
:
currency used by item
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Soviet Union
(Q15180)
:
former country in Eurasia (1922–1991)
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currency
Soviet ruble
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