Wikidata property related to chemistry | Q21294996 |
Wikidata property with datatype string that is not an external identifier | Q21099935 |
Wikidata property related to classification schemes | Q108566342 |
P1793 | format as a regular expression | [0-4] |
P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/15#P993 |
P2302 | property constraint | format constraint | Q21502404 |
single-value constraint | Q19474404 | ||
property scope constraint | Q53869507 | ||
P1659 | related property | NFPA Special | P877 |
NFPA Fire | P994 | ||
NFPA Instability | P995 | ||
safety classification and labelling | P4952 | ||
P1629 | Wikidata item of this property | NFPA 704 | Q208273 |
Q208273 | NFPA 704 | Wikidata property | P1687 |
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