メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.996977939797 34.9326426950853, 136.996397475548 34.9340697514971, 136.995935218892 34.9337911966461, 136.995384680321 34.9334380760295, 136.99465666686 34.9332514785275, 136.993436806435 34.9329261401085, 136.993564836532 34.9326887678046, 136.99415110502 34.9313514610397, 136.995198604474 34.9316099239555, 136.995290594172 34.931623363046, 136.99715812317 34.9321618479163, 136.996977939797 34.9326426950853)) ^^http://www.opengis.net/ont/geosparql#wktLiteral