| Wikidata property for authority control | Q18614948 |
| Wikidata property for items about languages | Q20824104 |
| P1628 | equivalent property | http://cldf.clld.org/v1.0/terms.rdf#glottocode |
| P2264 | Mix'n'match catalog ID | 134 |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/23#P1394 |
| P1896 | source website for the property | http://glottolog.org/glottolog/language |
| P8966 | URL match pattern | ^https?:\/\/glottolog\.org\/resource\/languoid\/id\/([a-z]{4}[0-9]{4}) |
| P9073 | applicable 'stated in' value | Glottolog | Q17165062 |
| P10726 | class of non-item property value | Glottolog code | Q33308998 |
| P1921 | formatter URI for RDF resource | http://glottolog.org/resource/languoid/id/$1 | |
| P1630 | formatter URL | https://glottolog.org/resource/languoid/id/$1 | |
| P2302 | property constraint | single-value constraint | Q19474404 |
| subject type constraint | Q21503250 | ||
| format constraint | Q21502404 | ||
| distinct-values constraint | Q21502410 | ||
| property scope constraint | Q53869507 | ||
| allowed-entity-types constraint | Q52004125 | ||
| P4354 | search formatter URL | https://glottolog.org/glottolog?search=$1 | |
| P2668 | stability of property value | sometimes changes | Q24025284 |
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