Property talk:P1891

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signatory
person, country, or organization that has signed an official document (use P50 for author)

Represents	signatory (Q28008347)
Data type	Item
Template parameter	"signers" in en:Template:Infobox document
Domain	According to this template: document (Q49848) and its subclasses According to statements in the property: document (Q49848) or contract (Q93288) When possible, data should only be stored as statements
Allowed values	items with instance of human (Q5) (note: this should be moved to the property statements)
Example	United States Declaration of Independence (Q127912) → Benjamin Harrison V (Q387664) Edward Rutledge (Q878666) Benjamin Franklin (Q34969) Treaty of Fredrikshamn (Q1130792) → Nikolay Rumyantsev (Q546048) David Alopaeus (Q1175557) Curt von Stedingk (Q559295) Anders Fredrik Skjöldebrand (Q3352340)
Source	item, external reference (note: this information should be moved to a property statement; use property source website for the property (P1896))
Tracking: usage	Category:Pages using Wikidata property P1891 (Q29168738)
See also	ratified by (P6193), number of request signatories (P9740)
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 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) Chart by item creation date Database reports/Constraint violations/P1891 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 49,044 Main statement 24,514 50% of uses Qualifier 24,264 49.5% of uses Reference 266 0.5% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Conflicts with “instance of (P31): human (Q5)”: 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/P1891#Conflicts with P31, search, SPARQL

Type “document (Q49848), contract (Q93288)”: item must contain property “instance of (P31), subclass of (P279)” with classes “document (Q49848), contract (Q93288)” 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/P1891#Type Q49848, Q93288, SPARQL

Value type “human (Q5), state (Q7275), organization (Q43229), person or organization (Q106559804)”: This property should use items as value that contain property “instance of (P31), subclass of (P279)”. On these, the value for instance of (P31), subclass of (P279) should be an item that uses subclass of (P279) with value human (Q5), state (Q7275), organization (Q43229), person or organization (Q106559804) (or a subclass thereof). (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/P1891#Value type Q5, Q7275, Q43229, Q106559804, SPARQL

Qualifiers “point in time (P585), statement disputed by (P1310), reason for deprecated rank (P2241), object has role (P3831), series ordinal (P1545), represents (P1268), object named as (P1932), reason for preferred rank (P7452), position held (P39), of (P642), depicts (P180)”: this property should be used only with the listed qualifiers. (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/P1891#allowed qualifiers, 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/P1891#Entity types

Scope is as main value (Q54828448), 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/P1891#Scope, SPARQL

This property is being used by: ca:Plantilla:Infotaula esdeveniment es:Plantilla:Ficha de documento pt:Predefinição:Info/Documento/Wikidata az:Şablon:Müqavilə be:Шаблон:Дагавор ru:Шаблон:Договор uk:Шаблон:Угода it:Template:Trattato hy:Կաղապար:Տեղեկաքարտ Օրենսդրական ակտ ba:Ҡалып:Килешеү ms:Templat:Kotak info dokumen/kotak pasir be-tarask:Шаблён:Дакумэнт, be-tarask:Шаблён:Цыркуляр Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Joint statement

I just created Category:joint statement (Q107013291) and added it to about 15 documents titled as instance of "joint statement". I listed signatories to some of these.

So far as I could tell, previously many of these statements were only labeled as documents.

Instead of instance of joint statement, they could be instance of document where genre (P136) is joint statement. Thoughts from anyone? In any case, anything titled "joint statement" is likely to have signatories. Blue Rasberry (talk) 20:19, 28 May 2021 (UTC)