メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335326001627 43.1215764830097, 141.335102584607 43.1216993160602, 141.334945065732 43.1217874423874, 141.334601465886 43.1219795712507, 141.334150959166 43.1215253137464, 141.333807146824 43.1211786634913, 141.333476198223 43.1208449821732, 141.333101461691 43.1204671349981, 141.334526719859 43.1196794988625, 141.335224822417 43.1203844104156, 141.336022581692 43.1211933514378, 141.335835175929 43.1212964307365, 141.33570275324 43.1213692158625, 141.335326001627 43.1215764830097)) ^^http://www.opengis.net/ont/geosparql#wktLiteral