メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.084304713558 37.9495882200017, 139.082077538592 37.9492003461323, 139.082341333687 37.9481299384041, 139.082366253523 37.9481392477611, 139.08258145729 37.9471695979585, 139.083932349958 37.9473675089326, 139.085062624184 37.9474983564683, 139.084304713558 37.9495882200017)) ^^http://www.opengis.net/ont/geosparql#wktLiteral