メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359138716118 43.0891858687813, 141.359886367712 43.089295349756, 141.359721448984 43.0900076149909, 141.359537343897 43.0907458227819, 141.358890885186 43.0906581549785, 141.357987990896 43.0905331792002, 141.358109988665 43.0900487267159, 141.358149114479 43.0897994371161, 141.358334966396 43.0890872673565, 141.358952277043 43.0891655689326, 141.359138716118 43.0891858687813)) ^^http://www.opengis.net/ont/geosparql#wktLiteral