@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:mm-2 a owl:NamedIndividual ;
    rdfs:label "reciprocal square millimetre"@en ;
    skos:altLabel "reciprocal square millimeter"@en ;
    skos:definition "A unit which is equal to the reciprocal of 10⁻³ square metre."@en ;
    unit:SI_code "mm-2" ;
    unit:UCUM_code "/mm2",
        "mm-2" .