メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.887002342348 43.0174752562442, 142.886930952861 43.0174305715849, 142.886815288522 43.0173582115517, 142.886365781129 43.0170852262243, 142.885917502771 43.0168009085777, 142.88642938176 43.0163674435101, 142.886512862641 43.0164184610028, 142.887010332749 43.0160149629791, 142.887933838195 43.016580343278, 142.887970057239 43.0166025068426, 142.887732171118 43.0168105273416, 142.887394414384 43.017120517903, 142.887078999842 43.0174087214069, 142.887002342348 43.0174752562442)) ^^http://www.opengis.net/ont/geosparql#wktLiteral