メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.370350379466 38.0012507921445, 139.369077648657 37.9986284407132, 139.375519542843 37.9966573725947, 139.37617000822 37.9975047904582, 139.377249430031 37.9991035662059, 139.376365462031 37.9993131127321, 139.376309623099 37.9994423343402, 139.376277752542 37.9995523720412, 139.374679314969 38.0000379030982, 139.372574411428 38.000707335838, 139.372837213424 38.001237516833, 139.371009749763 38.0017534130634, 139.370675238407 38.001032734808, 139.370350379466 38.0012507921445)) ^^http://www.opengis.net/ont/geosparql#wktLiteral