crm:P91_has_unit leaf node

@prefix crm: <http://www.cidoc-crm.org/cidoc-crm/> .
@prefix ecrm: <http://erlangen-crm.org/current/> .
@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 xsd: <http://www.w3.org/2001/XMLSchema#> .

crm:P91_has_unit a owl:ObjectProperty ;
    rdfs:label "P91 has unit"@en ;
    rdfs:comment """Scope note:
This property shows the type of unit an E54 Dimension was expressed in.

Examples:
- height of silver cup 232 (E54) has unit mm (E58)

In First Order Logic:
P91(x,y) ⊃ E54(x)
P91(x,y) ⊃ E58(y)"""@en ;
    rdfs:domain crm:E54_Dimension ;
    rdfs:range crm:E58_Measurement_Unit ;
    owl:equivalentProperty ecrm:P91_has_unit ;
    owl:inverseOf crm:P91i_is_unit_of ;
    skos:notation "P91"^^xsd:string .