メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348500054867 43.074764576215, 141.348360984989 43.0753376483945, 141.348208714388 43.075901473568, 141.347521369454 43.0758065193214, 141.347504327857 43.0758041342463, 141.346585553358 43.0756655717691, 141.346734206611 43.0751204989727, 141.346892474754 43.0745475816644, 141.348500054867 43.074764576215)) ^^http://www.opengis.net/ont/geosparql#wktLiteral