geosparql:hasMetricArea 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#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

:hasMetricArea a rdf:Property,
        owl:DatatypeProperty ;
    rdfs:domain :SpatialObject ;
    rdfs:isDefinedBy :,
        <http://www.opengis.net/spec/geosparql/1.1/req/geometry-extension/spatial-object-properties> ;
    rdfs:range xsd:double ;
    rdfs:subPropertyOf :hasMetricSize ;
    skos:definition "The area of a Spatial Object in square meters."@en ;
    skos:example spec11:B.1.1.2.3,
        spec11:B.1.1.2.9,
        spec11:B.1.1.3.3,
        spec11:B.1.2.2 ;
    skos:prefLabel "has area in square meters"@en .