@prefix NERC_P06: <http://vocab.nerc.ac.uk/collection/P06/current/> .
@prefix OBOE: <http://ecoinformatics.org/oboe/oboe.1.2/oboe-standards.owl#> .
@prefix OM: <http://www.ontology-of-units-of-measure.org/resource/om-2/> .
@prefix QUDT: <http://qudt.org/vocab/unit/> .
@prefix UO: <http://purl.obolibrary.org/obo/UO_> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix unit: <https://w3id.org/uom/> .

unit:SI_code a owl:AnnotationProperty ;
    rdfs:label "SI code" .

unit:UCUM_code a owl:AnnotationProperty ;
    rdfs:label "UCUM code" .

unit:kg a owl:NamedIndividual ;
    rdfs:label "kilogram"@en ;
    skos:definition "An SI base unit which 1) is the SI unit of mass and 2) is defined by taking the fixed numerical value of the Planck constant, h, to be 6.626 070 15 × 10⁻³⁴ when expressed in the unit joule second, which is equal to kilogram square metre per second, where the metre and the second are defined in terms of c and ∆νCs."@en ;
    skos:exactMatch OBOE:Kilogram,
        UO:0000009,
        QUDT:KiloGM,
        NERC_P06:KGXX,
        OM:kilogram ;
    unit:SI_code "kg" ;
    unit:UCUM_code "kg" .