メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335616441707 43.1399328184372, 141.335978945349 43.1414966563094, 141.335633518468 43.1415398295161, 141.334436066065 43.1416895799818, 141.332477404881 43.1419345129219, 141.331955887236 43.1419996896816, 141.331933833196 43.1419074518885, 141.331578529556 43.1404533632068, 141.331295457471 43.1392948108462, 141.332126788936 43.1391895703747, 141.332228781218 43.1391766715039, 141.332710505802 43.1391184235588, 141.333407455516 43.1390275727746, 141.334053200929 43.1389311038857, 141.335012609396 43.1388015464654, 141.335340942026 43.1387701254732, 141.335616441707 43.1399328184372)) ^^http://www.opengis.net/ont/geosparql#wktLiteral