メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335286748893 38.4161847450136, 141.33525997973 38.4161882379659, 141.330810244748 38.4159590099306, 141.326435051627 38.4157276120302, 141.326683669477 38.4121526989299, 141.326979919105 38.4120236339303, 141.327997053803 38.4120715767363, 141.328977583539 38.4121233248775, 141.331136752342 38.4122339808225, 141.333266132427 38.4123438787432, 141.335566720501 38.4124499103916, 141.335452727582 38.4140982498267, 141.335286748893 38.4161847450136)) ^^http://www.opengis.net/ont/geosparql#wktLiteral