メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.014848979026 34.8820681426982, 137.011005911747 34.8803463674328, 137.010879829972 34.8802965526914, 137.01201845203 34.878539287538, 137.012146283205 34.8785950894746, 137.015986395661 34.8802971797356, 137.015629777688 34.8809052541314, 137.014848979026 34.8820681426982)) ^^http://www.opengis.net/ont/geosparql#wktLiteral