メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.133444380616 34.7663040541427, 136.132547806523 34.7661895262522, 136.132579521184 34.7660537013047, 136.132650053566 34.7656239975392, 136.133531886152 34.7657365685071, 136.133444380616 34.7663040541427)) ^^http://www.opengis.net/ont/geosparql#wktLiteral