Property talk:P2868

Documentation

• Start a query
• Properties using this qualifier (statistics)
• Count

subject has role
role/generic identity of the item ("subject"), also in the context of a statement. For the role of the value of the statement ("object"), use P3831 ("object has role"). For acting roles, use P453 ("character role"). For persons, use P39.

Represents	role (Q4897819)
Data type	Item
Usage notes	Use this property to define the role of an item, also as part of a relation. Use for "subject" as in "concept", not "person" (use P3831 instead). For character roles (e.g. of actors) use P453.
Example	vemurafenib (Q423111) → antineoplastic (Q2853144) Wikimedia disambiguation page (Q4167410) → word-sense disambiguation (Q48522) Fritz Hellwig (Q71949) → centenarian (Q2944360)
Tracking: usage	Category:Pages using Wikidata property P2868 (Q118210232)
<complementary property>	object has role (P3831)
See also	character role (P453), has use (P366), narrative role (P5800), identity of subject in context (P4649), reference has role (P6184)
Lists	Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Database reports/Constraint violations/P2868
Proposal discussion	Proposal discussion
Current uses	Total 1,083,214 Main statement 397,027 36.7% of uses Qualifier 686,077 63.3% of uses Reference 110 <0.1% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Conflicts with “instance of (P31): film (Q11424), Wikimedia disambiguation page (Q4167410)”: 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/P2868#Conflicts with P31, SPARQL

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

List of violations of this constraint: Database reports/Constraint violations/P2868#Scope, hourly updated report, SPARQL

Allowed entity types are Wikibase item (Q29934200), Wikibase lexeme (Q51885771), Wikibase MediaInfo (Q59712033), Wikibase property (Q29934218), Wikibase sense (Q54285715), Wikibase form (Q54285143): 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/P2868#Entity types

None of unseen character (Q526231), antagonist (Q245204), main antagonist (Q55712911), protagonist (Q215972), supporting character (Q2595584), main character (Q12317360), minor character (Q27623618), title character (Q3246821), secondary antagonist (Q105078199): value must not be any of the specified items.
Replacement property: narrative role (P5800)
Replacement 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/P2868#none of, SPARQL

None of hero (Q162244), villain (Q290691), supervillain (Q6498903), antihero (Q110910), superhero (Q188784), damsel in distress (Q2293837), silent character (Q21561303), anti-villain (Q12218723): value must not be any of the specified items.
Replacement property: character type (P9071)
Replacement 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/P2868#none of, SPARQL

None of unnamed character (Q109934238): value must not be any of the specified items.
Replacement property: has characteristic (P1552)
Replacement 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/P2868#none of, SPARQL

None of voice (Q7390): value must not be any of the specified items.
Replacement property:
Replacement values: vocalist (Q2643890) (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/P2868#none of, SPARQL

None of death (Q4): value must not be any of the specified items.
Replacement property:
Replacement 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/P2868#none of, SPARQL

None of music video (Q193977): value must not be any of the specified items.
Replacement property: has characteristic (P1552)
Replacement 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/P2868#none of, SPARQL

None of Wikimedia redirect (Q21528878): value must not be any of the specified items.
Replacement property:
Replacement 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/P2868#none of, SPARQL

None of cancer survivor (Q5031456): value must not be any of the specified items.
Replacement property: medical condition (P1050)
Replacement values: cancer (Q12078) (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/P2868#none of, SPARQL

This property is being used by: ca:Plantilla:Infotaula personatge d:Template:List of medical treatments/Row eu:Txantiloi:Konposatu kimiko infotaula ga:Teimpléad:WD Bosca Sonraí Carachtar, ga:Teimpléad:WD Bosca Sonraí Comhdhúil Cheimiceach diq:Şablon:Infobox elementi Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Value protagonist (Q215972) will be automatically replaced to value protagonist (Q215972) and moved to narrative role (P5800) property. Testing: TODO list

Value unseen character (Q526231) will be automatically replaced to value unseen character (Q526231) and moved to narrative role (P5800) property. Testing: TODO list

Value antagonist (Q245204) will be automatically replaced to value antagonist (Q245204) and moved to narrative role (P5800) property. Testing: TODO list

Value main antagonist (Q55712911) will be automatically replaced to value main antagonist (Q55712911) and moved to narrative role (P5800) property. Testing: TODO list

Value supporting character (Q2595584) will be automatically replaced to value supporting character (Q2595584) and moved to narrative role (P5800) property. Testing: TODO list

Value main character (Q12317360) will be automatically replaced to value main character (Q12317360) and moved to narrative role (P5800) property. Testing: TODO list

Value minor character (Q27623618) will be automatically replaced to value minor character (Q27623618) and moved to narrative role (P5800) property. Testing: TODO list

Value title character (Q3246821) will be automatically replaced to value title character (Q3246821) and moved to narrative role (P5800) property. Testing: TODO list

Value secondary antagonist (Q105078199) will be automatically replaced to value secondary antagonist (Q105078199) and moved to narrative role (P5800) property. Testing: TODO list

Value hero (Q162244) will be automatically replaced to value hero (Q162244) and moved to character type (P9071) property. Testing: TODO list

Value villain (Q290691) will be automatically replaced to value villain (Q290691) and moved to character type (P9071) property. Testing: TODO list

Value supervillain (Q6498903) will be automatically replaced to value supervillain (Q6498903) and moved to character type (P9071) property. Testing: TODO list

Value antihero (Q110910) will be automatically replaced to value antihero (Q110910) and moved to character type (P9071) property. Testing: TODO list

Value anti-villain (Q65622867) will be automatically replaced to value anti-villain (Q65622867) and moved to character type (P9071) property. Testing: TODO list

Value superhero (Q188784) will be automatically replaced to value unseen character (Q526231) and moved to character type (P9071) property. Testing: TODO list

Value superhero (Q188784) will be automatically replaced to value unseen character (Q526231) and moved to character type (P9071) property. Testing: TODO list

Propose removing "has" from English label

The verb conjugation does not cover the full range of uses of the property. The property may be used, and is used, to indicate "[plural subjects] have role", or "[subject] had role". The label should cover all these cases, which "role" alone does. I was reverted on this change, but as yet there has been no valid reason given. --Swpb (talk) 15:54, 10 February 2017 (UTC)

The relationship ontology uses "has role" in "RO_0000087". There's value in having a name that's consistent with their name. Could you give specific examples where you currently see a problem? ChristianKl (talk) 20:02, 10 February 2017 (UTC)

Newclare Primary School (Q28739587). Swpb (talk) 06:14, 11 February 2017 (UTC)

Newclare Primary School (Q28739587)participant (P710)Black people (Q817393)

That seems like an odd use of participant (P710), which I'd expect to see used on an event. Bovlb (talk) 16:19, 15 February 2017 (UTC)

Given the domain that's agreed on for participant (P710) is events and schools aren't events, I don't think it should be expressed this way in the first place. ChristianKl (talk) 19:06, 15 February 2017 (UTC)

How would you express it instead? --Swpb (talk) 13:34, 16 February 2017 (UTC)

has part(s) of the class (P2670) with an item for "Black student" maybe. ChristianKl (talk) 11:30, 22 February 2017 (UTC)

• You can add "have role" as an alias. Let's avoid getting the label too close to "character role".
  --- Jura 11:26, 25 February 2017 (UTC)

Difference from P366?

@ChristianKl, Jura1: What's the difference from has use (P366) "role"?

• I see at Mona Lisa: Creator that P366 is used as a qualifier
• But the has use (P366) property examples show it as a main prop, exactly as P2868 is used.

Do we have an overlap? --Vladimir Alexiev (talk) 17:34, 7 March 2017 (UTC)

You might want to ping the proposer of this property. Personally, I'm mainly worried about the risk of a possible confusion with character role (P453).
--- Jura 08:42, 10 March 2017 (UTC)

My understanding is that "main use of the subject" (P366) is about planned usage whereas P2868 "role or purpose of item" also includes occasional uses.

Leonardo da Vinci is not "used" (P366) by anyone, he takes a specific responsibility/role. d1g (talk) 16:40, 8 May 2017 (UTC)

vemurafenib (Q423111) can be used as antineoplastic (Q23987513), so property should be has use (P366). d1g (talk) 16:45, 8 May 2017 (UTC)

used as qualifier constraint

Has there been any discussion to use this only as a qualifier? This doesn't seem to be the intention of the original proposal[1] and there are 77.422 violations, right now[2]. - Valentina.Anitnelav (talk) 15:25, 1 December 2017 (UTC)

Swpb, Derick Chan, do you think that this constraint is necessary? Why? There are roles that are significant for certain entities, so that they should be recorded in a main claim. If this should not be necessary, I will just restore the previous version. -Valentina.Anitnelav (talk) 15:49, 4 December 2017 (UTC)

No strong opinion. I think this property should primarily be a qualifier; it was implemented with the constraint, even if that wasn't part of the proposal, and there are plenty of properties available for main statements, such as instance of (P31), position held (P39), occupation (P106), participant in (P1344), and field of work (P101). But if someone wants to use this as a primary property, I don't see anything hugely wrong with that. Swpb (talk) 16:12, 4 December 2017 (UTC)

Thank you. I see that my interpretation of [3] was wrong (I didn't notice before that this should be used as a qualifier only). (But I would still support the removal of the constraint - it is heavily used on taxa (Tillandsia rubra (Q3528494)) and also useful in other cases) - Valentina.Anitnelav (talk) 17:16, 4 December 2017 (UTC)

(Edit: It is not of high importance, but the statement "it was implemented with the constraint" is false. The constraint was only added last week. The "history" of property constraints on the property talk's history is misleading, as it shows the status quo in addition to the past constraints.) - Valentina.Anitnelav (talk) 08:00, 5 December 2017 (UTC)

• I agree with Swpb on this. I don't hold a strong opinion that this must be a qualifier, though most current uses of this as a main verb (statement property) seems to be better-off modelled by has use (P366), instance of (P31), or sometimes flipping the main property and qualifier around. Deryck Chan (talk) 16:21, 6 December 2017 (UTC)

This point is also discussed at Wikidata:Project chat/Archive/2019/09#"Subject has role" as statement (from August 27th 2019) - Valentina.Anitnelav (talk) 07:06, 28 August 2019 (UTC)

Since 1. no one has an argument against this being used as a main property, and 2. there is no property that can be used e.g. for parts of chemical processes where no person uses the item but the item has a role nevertheless, and 3. because the creation with a constraint created tens of thousands of useless conflicts I will remove the constraint tomorrow at the latest. --SCIdude (talk) 14:34, 27 November 2019 (UTC)

Add 'task' as alias as well as 'role' or 'duty'

Add task as alias, this is important to distinguish from formal roles, but specific tasks people are asked to do

none of constraint: Wikimedia redirect page (Q21528878)

This new constraint should avoid uses like [4]. But maybe I'm missing something.

BTW dewiki can't have any "permanent duplicate items" afaik, as it doesn't have articles about the same topic in different dialects/scripts/langoids

@Fidoez: FYI. --- Jura 10:11, 30 November 2021 (UTC)