メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351150328868 43.1289772592492, 141.35145858134 43.1293033209684, 141.351787154525 43.129625532539, 141.350404914534 43.1303237465058, 141.350071123608 43.1300105624291, 141.34972829619 43.1297115135, 141.3492941861 43.1293385355213, 141.350756685205 43.1285681735869, 141.350812898532 43.1285390057905, 141.351213135062 43.128943712156, 141.351150328868 43.1289772592492)) ^^http://www.opengis.net/ont/geosparql#wktLiteral