メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.875951358259 37.4893501890603, 139.873060504771 37.4888674251738, 139.871252274401 37.488567700806, 139.868915081661 37.4881881331554, 139.869629385636 37.4854799587521, 139.870350561601 37.4827772675716, 139.872663400066 37.4831704758382, 139.874803376052 37.4835196250507, 139.87738936873 37.4839429085305, 139.876734054883 37.4865272047037, 139.875951358259 37.4893501890603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral