メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.842378693263 35.3203476956852, 136.842357267084 35.3209952702232, 136.841892231416 35.32111458072, 136.841959336643 35.3212827971984, 136.841922309822 35.3212701615008, 136.841509997715 35.3212511567118, 136.841536658539 35.3203097107776, 136.842378693263 35.3203476956852)) ^^http://www.opengis.net/ont/geosparql#wktLiteral