crm:P129_is_about 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:P129_is_about a owl:ObjectProperty ;
    rdfs:label "P129 is about"@en ;
    rdfs:comment """Scope note:
This property documents that an E89 Propositional Object has as subject an instance of E1 CRM Entity.

This differs from P67 refers to (is referred to by), which refers to an E1 CRM Entity, in that it describes the primary subject or subjects of an E89 Propositional Object.

Examples:
- The text entitled 'Reach for the sky' (E33) is about Douglas Bader (E21)

In First Order Logic:
P129(x,y) ⊃ E89(x)
P129(x,y) ⊃ E1(y)
P129(x,y) ⊃ P67(x,y)"""@en ;
    rdfs:domain crm:E89_Propositional_Object ;
    rdfs:range crm:E1_CRM_Entity ;
    rdfs:subPropertyOf crm:P67_refers_to ;
    owl:equivalentProperty ecrm:P129_is_about ;
    owl:inverseOf crm:P129i_is_subject_of ;
    skos:notation "P129"^^xsd:string .