Property talk:P2938

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Pleiades category ID
category (former place type) identifier in the Pleiades gazetteer

Applicable "stated in" value	Pleiades (Q24423804)
Data type	External identifier
Domain	According to this template: geographic location (Q2221906) According to statements in the property: geographic location (Q2221906) When possible, data should only be stored as statements
Allowed values	[a-z-]+
Example	tumulus (Q34023) → tumulus river (Q4022) → river salt marsh (Q29925) → salt-marsh
Source	https://pleiades.stoa.org/vocabularies/place-types https://atlantides.org/downloads/pleiades/rdf/place-types.ttl
Formatter URL	https://pleiades.stoa.org/vocabularies/place-types/$1
See also	Pleiades ID (P1584), NLS place type ID (P9230), GeoNames feature code (P2452)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Database reports/Constraint violations/P2938 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 38 Main statement 8 21.1% of uses Qualifier 29 76.3% of uses Reference 1 2.6% of uses
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Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Unique value, SPARQL (every item), SPARQL (by value)

Type “geographic location (Q2221906)”: item must contain property “subclass of (P279)” with classes “geographic location (Q2221906)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Type Q2221906, SPARQL

Format “[a-z-]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Format, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Entity types

Scope is as main value (Q54828448), as reference (Q54828450), as qualifier (Q54828449): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Scope, SPARQL

Conflicts with “Pleiades ID (P1584)”: this property must not be used with the listed properties and values. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2938#Conflicts with P1584, search, SPARQL

Use on individual monuments and locations

Pleiades category ID (P2938) should not appear as a main property on wikidata items for individual monuments or locations. Instead Pleiades category ID (P2938) may be added as a qualifier to a Pleiades ID (P1584) statement. (See eg this query for examples: https://w.wiki/5CzZ ; or https://w.wiki/5DDc with value lookup).

The only items that should have Pleiades category ID (P2938) as a main-statement property are the generic items for classes of item themselves, eg tomb (Q381885), hill (Q54050), amphitheatre (Q54831), bridge (Q12280) etc. Jheald (talk) 16:42, 26 May 2022 (UTC)