| Wikidata property for authority control for places | Q19829908 |
| Wikidata property for an identifier | Q19847637 |
| Wikidata property for authority control, with reciprocal use of Wikidata | Q24075706 |
| P1793 | format as a regular expression | [1-9]\d* |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Who%27s_on_First_ID_(WOFID) |
| P8966 | URL match pattern | ^https?:\/\/spelunker\.whosonfirst\.org\/id\/([1-9]\d*)\/ |
| P9073 | applicable 'stated in' value | Who's On First | Q57967241 |
| P10726 | class of non-item property value | Who's on First ID | Q124357141 |
| P2429 | expected completeness | always incomplete | Q21873886 |
| P1630 | formatter URL | https://spelunker.whosonfirst.org/id/$1/ | |
| P2378 | issued by | Who's On First | Q57967241 |
| P4876 | number of records | 26000000 | |
| P2302 | property constraint | distinct-values constraint | Q21502410 |
| item-requires-statement constraint | Q21503247 | ||
| format constraint | Q21502404 | ||
| subject type constraint | Q21503250 | ||
| allowed-entity-types constraint | Q52004125 | ||
| property scope constraint | Q53869507 | ||
| P4354 | search formatter URL | https://spelunker.whosonfirst.org/search/?q=$1 | |
| P2668 | stability of property value | values can be added | Q23611840 |
Search more.