メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349269133164 43.0556004867433, 141.349694749261 43.0556604531171, 141.350054899942 43.055711251774, 141.349912267455 43.0562831057407, 141.349770303584 43.0568549656071, 141.348222382397 43.0566369177632, 141.348363829915 43.0560750429262, 141.348502105378 43.0554938727085, 141.349058524998 43.0555742125478, 141.349269133164 43.0556004867433)) ^^http://www.opengis.net/ont/geosparql#wktLiteral