メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.767109023735 45.1466446406141, 141.766324254908 45.1513013088088, 141.762353577492 45.1748502976506, 141.762052795778 45.1766331299228, 141.748380431704 45.1756032046012, 141.741044839244 45.1751422354996, 141.744759699398 45.152180991745, 141.745763812731 45.145201758652, 141.747948381813 45.1300105021083, 141.749247876625 45.1209691687043, 141.756436389588 45.1216006860068, 141.757042412113 45.1162883230203, 141.757972398618 45.1163598891442, 141.761106563891 45.1171737925903, 141.763544389902 45.1177582746242, 141.767623776507 45.1188581402815, 141.771833437378 45.1185917143569, 141.767109023735 45.1466446406141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral