| Wikidata property with datatype string that is not an external identifier | Q21099935 |
| Wikidata property related to lighthouses | Q28739677 |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Lighthouse_Directory_page |
| P1896 | source website for the property | https://www.ibiblio.org/lighthouse/ |
| P9073 | applicable 'stated in' value | Lighthouse Directory | Q23581832 |
| P1630 | formatter URL | https://www.ibiblio.org/lighthouse/$1.htm | |
| P6104 | maintained by WikiProject | WikiProject Lighthouses | Q21830288 |
| P2302 | property constraint | single-value constraint | Q19474404 |
| subject type constraint | Q21503250 | ||
| allowed-entity-types constraint | Q52004125 | ||
| property scope constraint | Q53869507 | ||
| P2668 | stability of property value | sometimes changes | Q24025284 |
| Q23581832 | Lighthouse Directory | Wikidata property | P1687 |
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