| Wikidata property for an identifier | Q19847637 |
| Wikidata property related to law and justice | Q22984026 |
| numeric identifier | Q93868746 |
| P1793 | format as a regular expression | \d{10} |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/NDL_law_ID |
| P1896 | source website for the property | https://hourei.ndl.go.jp/ |
| P8966 | URL match pattern | ^https?:\/\/hourei\.ndl\.go\.jp\/(?:#|simple)\/detail\?lawId=(\d{10}) |
| P9073 | applicable 'stated in' value | Japanese Law Index | Q98756114 |
| P10726 | class of non-item property value | ??? | Q117191070 |
| P17 | country | Japan | Q17 |
| P2429 | expected completeness | always incomplete | Q21873886 |
| P1630 | formatter URL | https://hourei.ndl.go.jp/#/detail?lawId=$1 | |
| P2378 | issued by | National Diet Library | Q477675 |
| P4876 | number of records | 183293 | |
| P2302 | property constraint | subject type constraint | Q21503250 |
| distinct-values constraint | Q21502410 | ||
| format constraint | Q21502404 | ||
| conflicts-with constraint | Q21502838 | ||
| item-requires-statement constraint | Q21503247 | ||
| allowed-entity-types constraint | Q52004125 | ||
| single-value constraint | Q19474404 | ||
| property scope constraint | Q53869507 | ||
| label in language constraint | Q108139345 | ||
| P1659 | related property | NDL Authority ID | P349 |
| NDL Bib ID | P1054 | ||
| JPNO | P2687 | ||
| law identifier | P8550 | ||
| NDL earlier law ID | P9986 | ||
| Official Internet Portal of Legal Information ID | P10485 | ||
| P2668 | stability of property value | never changes | Q23611288 |
| Q98756114 | Japanese Law Index |
| Q477675 | National Diet Library |
| Q117191070 | 日本法令索引識別子 |
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