メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350982542266 43.0810060685184, 141.350904582836 43.0809899124674, 141.350834389122 43.0809807805538, 141.350216872174 43.0808963798874, 141.350333511172 43.0805182961228, 141.350519191548 43.0797757475637, 141.351561572581 43.0799234063302, 141.351378650443 43.0802812789817, 141.351249558823 43.0805141079311, 141.351236352674 43.0805379856831, 141.350982542266 43.0810060685184)) ^^http://www.opengis.net/ont/geosparql#wktLiteral