メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.354011303022 43.772188016434, 142.354224073413 43.7725792956985, 142.353438122064 43.7727826873721, 142.353160518019 43.7727273369093, 142.353076118746 43.7730052175909, 142.352606713396 43.7729466304557, 142.35244905559 43.7726439905104, 142.352466248378 43.7726389819099, 142.352181025229 43.7720861140837, 142.353714421989 43.7716346202118, 142.354011303022 43.772188016434)) ^^http://www.opengis.net/ont/geosparql#wktLiteral