メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.979846543086 34.8739137394756, 136.980309982885 34.8745567740401, 136.979723849412 34.8748205427478, 136.978684281382 34.873781500282, 136.978209524648 34.8733211360747, 136.978327774987 34.8732653996573, 136.978918867668 34.8729882634661, 136.978691443513 34.8727451384654, 136.979590244404 34.8723695245272, 136.979795515868 34.8722909611793, 136.980047032386 34.8730588924459, 136.98006676211 34.8732717615905, 136.980107196745 34.8735310052054, 136.980174977866 34.8737902910384, 136.979846543086 34.8739137394756)) ^^http://www.opengis.net/ont/geosparql#wktLiteral