メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.157182743133 34.6680507616179, 135.157112911668 34.6681239037506, 135.156592829358 34.6680369777465, 135.155750571366 34.6678872668968, 135.156003005883 34.6676395514872, 135.15678641031 34.6668679928656, 135.157348513984 34.6672401343496, 135.157728260953 34.6674971630231, 135.157182743133 34.6680507616179)) ^^http://www.opengis.net/ont/geosparql#wktLiteral