メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.361762419886 43.1079029827848, 141.361694211315 43.1082182859996, 141.361591908024 43.1086606850754, 141.360024588483 43.1084509811904, 141.360091985615 43.1081856030644, 141.360135981834 43.1080311581181, 141.360214549242 43.1077036992537, 141.360294583327 43.1073611315953, 141.361831176591 43.1075430966741, 141.361818878557 43.1076300646697, 141.361762419886 43.1079029827848)) ^^http://www.opengis.net/ont/geosparql#wktLiteral