observable:callType leaf node

@prefix observable: <https://unifiedcyberontology.org/ontology/uco/observable#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

observable:callType a owl:DatatypeProperty ;
    rdfs:label "callType"@en ;
    rdfs:comment "The type of a phone call,for example incoming, outgoing, missed."@en ;
    rdfs:domain observable:PhoneCallFacet ;
    rdfs:range xsd:string .