メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.822371686804 35.2583088198019, 136.822134960157 35.2587416515455, 136.821941504391 35.2590953568407, 136.82140040588 35.2589041685603, 136.821382938018 35.2588979919318, 136.820932676567 35.2587388214758, 136.820474763567 35.2585770215854, 136.821065856657 35.25750186234, 136.821515889063 35.2574927896195, 136.821583029108 35.2575034738738, 136.821717394978 35.2575248416147, 136.821790792746 35.2575227262491, 136.822817848918 35.2574931008589, 136.822371686804 35.2583088198019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral