メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.794773246898 34.9092985379946, 135.794711041275 34.9092842066008, 135.79483567066 34.9092331445132, 135.795144021996 34.9090199114631, 135.795347567797 34.9088272789336, 135.795381188219 34.9091494781237, 135.795382102486 34.909282097194, 135.794773246898 34.9092985379946)) ^^http://www.opengis.net/ont/geosparql#wktLiteral