| Wikidata property for an identifier | Q19847637 |
| Wikidata property related to encyclopedias | Q55452870 |
| numeric identifier | Q93868746 |
| Wikidata property related to music | Q27525351 |
| P1793 | format as a regular expression | [1-9]\d* |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/MGG_Online_ID |
| P1896 | source website for the property | https://www.mgg-online.com/ |
| P8966 | URL match pattern | ^https?:\/\/(?:www\.)?mgg-online\.com\/mgg\/stable\/([1-9]\d*) |
| P9073 | applicable 'stated in' value | Die Musik in Geschichte und Gegenwart 1st Edition | Q1214935 |
| P2667 | corresponding template | ??? | Q58489377 |
| P1630 | formatter URL | https://www.mgg-online.com/mgg/stable/$1 | |
| P2302 | property constraint | format constraint | Q21502404 |
| distinct-values constraint | Q21502410 | ||
| property scope constraint | Q53869507 | ||
| single-value constraint | Q19474404 | ||
| allowed-entity-types constraint | Q52004125 | ||
| P2875 | property usage tracking category | Category:Pages using Wikidata property P6091 | Q58315701 |
| Q58315701 | Category:Pages using Wikidata property P6091 | related property | P1659 |
| Q1214935 | Die Musik in Geschichte und Gegenwart 1st Edition | Wikidata property | P1687 |
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