メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335440804653 43.0486236901485, 141.335418457409 43.0487981397035, 141.335391972814 43.0490057526679, 141.335348063098 43.0493276514025, 141.335326322071 43.049487126104, 141.333614644084 43.0493861470306, 141.333632992453 43.0492165882646, 141.333674639867 43.0488861623632, 141.333683468169 43.0487699076259, 141.333697734505 43.0486747246644, 141.333720207599 43.0485115292328, 141.333813290631 43.0478629913699, 141.335516901372 43.0479748043243, 141.335456428146 43.0485015823184, 141.335440804653 43.0486236901485)) ^^http://www.opengis.net/ont/geosparql#wktLiteral