メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.524249908992 31.5536312330663, 130.52380594477 31.5538281465265, 130.523767721572 31.5537795249092, 130.523723392167 31.5537342627913, 130.523693843208 31.5537358437894, 130.523688961416 31.553724833674, 130.523876302674 31.5536421025497, 130.523899829281 31.5536760128859, 130.524205906228 31.5535463718212, 130.524249908992 31.5536312330663)) ^^http://www.opengis.net/ont/geosparql#wktLiteral