メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.508445191598 34.2982533518585, 135.506635594058 34.2983762655169, 135.506611675719 34.2980738704537, 135.506725894617 34.2974185976322, 135.50699028475 34.2974367025451, 135.509364486901 34.2975876281166, 135.510552032427 34.2976653282104, 135.510503146384 34.2982773376381, 135.509148184343 34.2982219291665, 135.50867463424 34.2982614531511, 135.508445191598 34.2982533518585)) ^^http://www.opengis.net/ont/geosparql#wktLiteral