Property talk:P18

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headquarters location
city, where an organization's headquarters is or has been situated. Use qualifier for specific building

Data type	Item
Domain	organization (Q12), website (Q291), company (Q244) or brand (Q290)
Example	Prime 9ja Online Media (Q415) → Nigeria (Q461) OCLC, Inc. (Q742) → United States of America (Q671)
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 Gratispaideia Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers 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)> Map Random list
Proposal discussion	Originally created without a formal discussion
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Type “organization (Q12), website (Q291), company (Q244), brand (Q290)”: element must contain property “instance of (P3)” with classes “organization (Q12), website (Q291), company (Q244), brand (Q290)” or their subclasses (defined using NLA Trove ID (P279)). Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P18#type, SPARQL

Qualifiers “located in the administrative territorial entity (P177), country (P14), location (P64), coordinate location (P134), start time (P174), end time (P175), street address (P92), point in time (P80), located on terrain feature (P176), reason for deprecated rank (P344), latest date (P172), earliest date (P173), reason for preferred rank (P345), subject named as (P82), images (P62)”: this property should be used only with the listed qualifiers. Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P18#Allowed qualifiers, SPARQL

Contemporaries: if [item A] has this property (headquarters location (P18)) linked to [item B], then [item A] and [item B] have to coincide or coexist at some point of history. Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P18#Contemporary, SPARQL

Scope is as main value (Q793), as qualifier (Q792): the property must be used by specified way only Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P18#scope, SPARQL