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Wikidata
:
WikiProject Supertemplates/doc/P6872
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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
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
→
periodical
•
website
has written for
(P6872)
:
publication an author has contributed to
edit
Paul Krugman
(Q131112)
:
American economist (born 1953)
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has written for
The New York Times
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add value