| Wikidata property for an identifier | Q19847637 |
| Wikidata property for items about occupations | Q24043375 |
| numeric identifier | Q93868746 |
| P1793 | format as a regular expression | \d{4} |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/16#P1022 |
| P1896 | source website for the property | http://www.ine.es/daco/daco42/clasificaciones/corr_cno11_ciuo08.xls |
| P17 | country | Spain | Q29 |
| P4876 | number of records | 541 | |
| P2302 | property constraint | subject type constraint | Q21503250 |
| format constraint | Q21502404 | ||
| distinct-values constraint | Q21502410 | ||
| item-requires-statement constraint | Q21503247 | ||
| allowed-entity-types constraint | Q52004125 | ||
| single-value constraint | Q19474404 | ||
| P1659 | related property | occupation | P106 |
| ISCO-88 occupation class | P952 |
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