schema1:keywords leaf node

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema1: <http://schema.org/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

schema1:keywords a rdf:Property ;
    rdfs:label "keywords" ;
    schema1:domainIncludes schema1:CreativeWork,
        schema1:Organization,
        schema1:Service ;
    schema1:rangeIncludes rdf:langString,
        xsd:string,
        sh:IRI ;
    rdfs:comment "Keywords or tags used to describe this content. Multiple entries in a keywords list are typically delimited by commas." .