メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.981580860927 34.8739319056036, 136.980309982885 34.8745567740401, 136.979846543086 34.8739137394756, 136.980174977866 34.8737902910384, 136.980107196745 34.8735310052054, 136.98006676211 34.8732717615905, 136.980047032386 34.8730588924459, 136.979795515868 34.8722909611793, 136.980643525668 34.8718775105058, 136.981283802061 34.8731829230382, 136.981508084636 34.8736210579463, 136.981580860927 34.8739319056036)) ^^http://www.opengis.net/ont/geosparql#wktLiteral