メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.764704042395 43.2041776738702, 141.764425694895 43.2044661766318, 141.764148800313 43.2047650930074, 141.7638977191 43.2046331091109, 141.763912002806 43.2046192589465, 141.763698792222 43.2045099827377, 141.763359381985 43.2043501140548, 141.763226248851 43.2042801290291, 141.763511176674 43.2040112797101, 141.763503321691 43.204007588812, 141.763564400473 43.2039369574804, 141.76380422553 43.2036511072167, 141.764300848148 43.2038909242419, 141.764246869797 43.2039391512696, 141.764704042395 43.2041776738702)) ^^http://www.opengis.net/ont/geosparql#wktLiteral