| Wikidata property to indicate a language | Q18616084 |
| P1628 | equivalent property | http://www.telegraphis.net/ontology/geography/geography#officialLanguage |
| https://w3id.org/vocab/lingvoj#officialLanguage |
| P3709 | category for value different from Wikidata | Category:P37 different on Wikidata | Q57386649 |
| P3713 | category for value not in Wikidata | ??? | Q57386935 |
| P3734 | category for value same as Wikidata | ??? | Q42533382 |
| P1552 | has characteristic | official | Q29509043 |
| P7087 | inverse label item | official language of | Q65969997 |
| P2302 | property constraint | allowed qualifiers constraint | Q21510851 |
| value-type constraint | Q21510865 | ||
| subject type constraint | Q21503250 | ||
| property scope constraint | Q53869507 | ||
| allowed-entity-types constraint | Q52004125 | ||
| P2875 | property usage tracking category | Category:Pages using Wikidata property P37 | Q23908973 |
| P2668 | stability of property value | values can be added | Q23611840 |
| P1647 | subproperty of | language used | P2936 |
| P1629 | Wikidata item of this property | official language | Q23492 |
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