geosparql:asWKT leaf node

@prefix : <http://www.opengis.net/ont/geosparql#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix spec11: <http://www.opengis.net/spec/geosparql/1.1/specification.html#> .

:asWKT a rdf:Property,
        owl:DatatypeProperty ;
    rdfs:domain :Geometry ;
    rdfs:isDefinedBy :,
        <http://www.opengis.net/spec/geosparql/1.0/req/geometry-extension/geometry-as-wkt-literal>,
        <http://www.opengis.net/spec/geosparql/1.1/req/geometry-extension/geometry-as-wkt-literal> ;
    rdfs:range :wktLiteral ;
    rdfs:subPropertyOf :hasSerialization ;
    skos:definition "The WKT serialization of a Geometry"@en ;
    skos:example spec11:B.1.1.2.2,
        spec11:B.1.1.2.3,
        spec11:B.1.1.2.4,
        spec11:B.1.1.2.5,
        spec11:B.1.1.2.6,
        spec11:B.1.1.2.8,
        spec11:B.1.1.3.1,
        spec11:B.1.1.3.2,
        spec11:B.1.1.3.3,
        spec11:B.1.2.2,
        spec11:B.2.1,
        spec11:B.2.2.4 ;
    skos:prefLabel "as WKT"@en .