Property talk:P4224

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category contains
category contains elements that are instances of this item

Represents	Wikimedia category (Q4167836)
Data type	Item
Template parameter	in SPARQL form, on Commons c:Template:Category contains (experimental)
Domain	Wikimedia category (Q4167836)
Allowed values	According to this template: class items According to statements in the property: When possible, data should only be stored as statements
Example	Category:Grade I listed buildings in Bedfordshire (Q8497784) → architectural structure (Q811979) Category:Association football magazines (Q4305) → magazine (Q41298) Category:Ungulates (Q4333) → taxon (Q16521)
Robot and gadget jobs	Move existing statements on category items using is a list of (P360) to use this property instead
See also	category combines topics (P971), is a list of (P360), category's main topic (P301), contains (P4330), instance of (P31), related category (P7084)
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) Database reports/Complex constraint violations/P4224 Database reports/Constraint violations/P4224 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 945,870 Main statement 928,553 98.2% of uses Qualifier 17,309 1.8% of uses Reference 8 <0.1% of uses
Search for values

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

Type “Wikimedia category (Q4167836)”: item must contain property “instance of (P31), subclass of (P279)” with classes “Wikimedia category (Q4167836)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4224#Type Q4167836, hourly updated report, SPARQL

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/P4224#Scope, 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/P4224#Entity types

This property is being used by: uk:Шаблон:Категорія за (Template:Set category (Q42878390)) commons:Template:Wikidata Infobox/core mw:Template:Wikidata Infobox/core mr:साचा:विकिडाटा माहितीचौकट/core, mr:साचा:विकिडेटा माहितीचौकट/core ur:سانچہ:خانہ معلومات ویکی ڈیٹا/کور, ur:سانچہ:Wikidata Infobox/core q:fr:Modèle:Wikidata Infobox/core de:Vorlage:Wikidata Infobox/core gu:ઢાંચો:Wikidata Infobox/core ta:வார்ப்புரு:Wikidata Infobox/core hi:साँचा:Wikidata Infobox/core sv:Mall:Wikidata Infobox/core s:zh:Template:Wikidata Infobox/core ckb:داڕێژە:Wikidata Infobox/core pt:Predefinição:Wikidata Infobox/core id:Templat:Kotak info Wikidata/inti ku:Şablon:Wikidata Infobox/core mnw:ထာမ်ပလိက်:Wikidata Infobox/core s:bn:টেমপ্লেট:উইকিউপাত্ত তথ্যছক/মূল d:Template:Wikidata Infobox/core no:Mal:Wikidata Infobox/core s:ban:Mal:Wikidata Infobox/core ban:Mal:Wikidata Infobox/core lv:Veidne:Wikidata Infobox/core s:hi:साँचा:Wikidata Infobox/core ps:کينډۍ:Wikidata Infobox/core Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Q59542487 missing P4224
Wikimedia category (Q59542487)s should define their membership semantics using category contains (P4224) and relevant qualifiers (when applicable). (Help)
Violations query: SELECT DISTINCT ?item ?itemLabel WHERE { SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". } ?item wdt:P31 wd:Q59542487. FILTER NOT EXISTS { ?item wdt:P4224 ?category_contains. } }
List of this constraint violations: Database reports/Complex constraint violations/P4224#Q59542487 missing P4224

Metacategory constraints

Conflicts with instance of (P31) : Wikimedia meta category (Q30432511) deleted because it means that The metacategory contains sub- metacategories OR categories which contains classes stated in category contains (P4224) Here.--Avatar6 (talk) 00:36, 11 September 2018 (UTC)

This is not what this property is used for

There is extensive usage of using it to describe what the list contains.. so much so that Reasonator will show what should be in the list from a Wikidata point of view. Thanks, GerardM (talk) 08:41, 21 May 2020 (UTC)

Unclear relationship with category's main topic (P301)

It is not very obvious to me when one should use this property vs. category's main topic (P301). I see that one of the Wikidata property example (P1855) used in the latter is Category:Ungulates (Q4333), which has the following two statements:

• Category:Ungulates (Q4333)category's main topic (P301)ungulate (Q1231177)
• Category:Ungulates (Q4333)category contains (P4224)taxon (Q16521)

...which may help illustrate the difference, so I went ahead and added that very same item as an example for this property as well; but it still feels a bit fuzzy, so ideally there should be a disambiguation in the form of Wikidata usage instructions (P2559) added to both properties. Can anyone help with a proposed wording for those? --Waldyrious (talk) 22:40, 10 November 2024 (UTC)