メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.086976155716 35.1403440229742, 136.086861518424 35.1403150218362, 136.086494614515 35.1402283881255, 136.086000835696 35.1399886691836, 136.086692439438 35.1391315619582, 136.087530792658 35.1395501865186, 136.086976155716 35.1403440229742)) ^^http://www.opengis.net/ont/geosparql#wktLiteral