メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.774172380744 35.414481707246, 136.772973962873 35.4145263834539, 136.771508245431 35.4146217669471, 136.771509161962 35.4144336439812, 136.771721786307 35.4144287699826, 136.771713482916 35.4141732965028, 136.772950223538 35.414065058232, 136.774146555424 35.4140234743909, 136.774172380744 35.414481707246)) ^^http://www.opengis.net/ont/geosparql#wktLiteral