subclass of

this item is a subclass (subset) of that item; all instances of this item are instances of that item; different from P31 (instance of), e.g.: K2 is an instance of mountain; volcano is a subclass of mountain (and an instance of volcanic landform)

subclass of is …
instance of (P31):
transitive Wikidata propertyQ18647515
asymmetric Wikidata propertyQ18647519
Wikidata property for the relationship between classesQ28326461
fundamental Wikidata entityQ115490628
Wikidata propertyQ18616576

External links are
P1628equivalent propertyhttp://www.w3.org/2000/01/rdf-schema#subClassOf
P1896source website for the propertyhttps://en.wikipedia.org/wiki/CycL
http://www.w3.org/TR/2012/REC-owl2-primer-20121211/#Classes_and_Instances
http://www.w3.org/TR/rdf-schema/#ch_subclassof
P11914Wikibase World IDP27

P3734category for value same as Wikidata???Q42533435
P1889different frominstance ofQ21503252
P7087inverse label itemsuperclass ofQ66088480
P2302property constraintvalue-requires-statement constraintQ21510864
contemporary constraintQ25796498
conflicts-with constraintQ21502838
allowed-entity-types constraintQ52004125
none-of constraintQ52558054
property scope constraintQ53869507
P2875property usage tracking categoryCategory:Pages using Wikidata property P279Q23909012
P1659related propertyinstance ofP31
parent taxonP171
part ofP361
broader conceptP4900
P2668stability of property valuesometimes changesQ24025284
P6609value hierarchy propertysubclass ofP279
P1629Wikidata item of this propertysubclass ofQ21514624
P2559Wikidata usage instructionsAbout this property, please read https://www.wikidata.org/wiki/Help:Basic_membership_properties
Class items can be documented using {{Item documentation}} on their talk page and by adding a list of properties in their Talk:Q<id>/class subpage (work in progress)
以下のヘルプを参照してください
Не путать со свойством P31. Краткое описание на https://www.wikidata.org/wiki/Help:Basic_membership_properties
关于此属性，请阅读https://www.wikidata.org/wiki/Help:Basic_membership_properties
關于此屬性，請閱讀https://www.wikidata.org/wiki/Help:Basic_membership_properties
此項目用於建立描述本分類與母分類之關係，與P31不同。

Reverse relations

subproperty of (P1647)
P171parent taxon
P10019term in higher taxon

related property (P1659)
Q23909012Category:Pages using Wikidata property P279
Q87346598entity is a class, not an instance
Q126600351entity is an instance, not a class
P31instance of
P8225is metaclass for
P2445metasubclass of
Q42533435Catégorie Wikimedia

Wikidata property (P1687)
Q30208840instance or subclass of
Q21514624subclass of

properties for this type (P1963)
Q15303351art material
Q46997958climate of geographic location
Q2095food
Q34770language
Q64362969language in script
Q107547950music award category
Q15126161prototype aircraft model
Q113145171type of chemical entity
Q125517960type of electronic component

Wikidata property example for properties (P2271)
P11914Wikibase World ID
P5314property scope

uses property (P3176)
Q27044266An Empirical Evaluation of Property Recommender Systems for Wikidata and Collaborative Knowledge Bases
Q27037396Applying a Multi-Level Modeling Theory to Assess Taxonomic Hierarchies in Wikidata
Q21503281Centralizing content and distributing labor: a community model for curating the very long tail of microbial genomes
Q27037451Extracting Scientists from Wikipedia
Q27038126Extraction of Career Profiles from Wikipedia
Q27036482Reifying RDF: What Works Well With Wikidata?
Q27036474State of the Union: A Data Consumer’s Perspective on Wikidata and Its Properties for the Classification and Resolution of Entities
Q27869949Travel Attractions Recommendation with Knowledge Graphs
Q23712646Wikidata as a semantic framework for the Gene Wiki initiative
Q27036443Wikidata through the Eyes of DBpedia
Q84425101inferred from superclass

value hierarchy property (P6609)
P1399convicted of
P136genre
P31instance of
P106occupation
P361part of
P279subclass of

Q105543609musical work/compositioninappropriate property for this typeP8952

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