メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.655954588799 35.1727950902025, 138.654463501066 35.1738163821593, 138.653427477425 35.1744838350534, 138.651770877141 35.1756154446455, 138.651006510487 35.1753656115109, 138.650656541487 35.1752377322384, 138.651161277955 35.1745498365654, 138.651255522276 35.1744333791592, 138.651935173345 35.1736989942493, 138.652485453757 35.1732344926742, 138.652877452051 35.1729529379777, 138.653497445068 35.1725511622623, 138.655173805713 35.1714737997153, 138.655550952774 35.1719907270048, 138.655639484786 35.1721663227846, 138.655954588799 35.1727950902025)) ^^http://www.opengis.net/ont/geosparql#wktLiteral