| Wikidata property with datatype string that is not an external identifier | Q21099935 |
| Wikidata property related to poetry | Q55116891 |
| Wikidata property related to creative works | Q18618644 |
| P1793 | format as a regular expression | [×–⏑⏒⏓⏔⏕⏖/|‖∪]( [–⏑⏒⏓⏔⏕⏖/|‖∪])* |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/44#P2552 |
| P2302 | property constraint | format constraint | Q21502404 |
| allowed-entity-types constraint | Q52004125 | ||
| property scope constraint | Q53869507 | ||
| P1659 | related property | used metre | P2551 |
| P2668 | stability of property value | never changes | Q23611288 |
| P1629 | Wikidata item of this property | metrical pattern | Q3951891 |
| P2551 | used metre | related property | P1659 |
| Q3951891 | metrical pattern | Wikidata property | P1687 |
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