メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.425282481137 43.764446892808, 142.425319045631 43.7648442814635, 142.425152273603 43.7648549592368, 142.42394992525 43.7649319645506, 142.423938268918 43.764616727646, 142.421790627674 43.7647483783815, 142.421754117426 43.7641977037664, 142.422890897559 43.7641410722082, 142.423445437314 43.7641134502821, 142.423853555942 43.7640876272284, 142.424527054177 43.7640450178213, 142.425241356649 43.7639998295004, 142.425282481137 43.764446892808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral