メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.334889096532 43.1080710538455, 141.334565429404 43.1082124191398, 141.334383180449 43.1082984749417, 141.333973910212 43.1084917263852, 141.333953711513 43.1084686372968, 141.333714363546 43.1081952533603, 141.333278331556 43.1076972832039, 141.333856144881 43.1074099185145, 141.334508620605 43.1070846128547, 141.334888704708 43.1074983731226, 141.335226591342 43.1079035666658, 141.334889096532 43.1080710538455)) ^^http://www.opengis.net/ont/geosparql#wktLiteral