メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.376776226652 43.0612838073528, 141.377331340484 43.0615098611089, 141.376824704582 43.062241293513, 141.376819900625 43.062248642271, 141.376488848341 43.0627453162505, 141.376033324621 43.0634287491912, 141.375737635073 43.0639538227874, 141.375142664578 43.0637705692746, 141.374874035163 43.0636868633323, 141.374748076272 43.0636476409881, 141.374651243527 43.06361757321, 141.374084212821 43.0634530948349, 141.373630746788 43.063322609401, 141.37501113605 43.0615048082623, 141.375576709289 43.0607914863824, 141.376776226652 43.0612838073528)) ^^http://www.opengis.net/ont/geosparql#wktLiteral