メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.422808189005 43.7962687643631, 142.423218025429 43.796524418628, 142.423738637715 43.7968480104738, 142.424250904255 43.7971535748299, 142.423567111927 43.7977512559113, 142.423076230177 43.7981524331382, 142.422590935768 43.7985695980306, 142.422117356808 43.7982599788623, 142.421560718977 43.797906405861, 142.421169023216 43.7976627796777, 142.420826784876 43.79744991671, 142.420459838174 43.7972216873662, 142.419979516774 43.7969229338141, 142.420555810239 43.7964142604604, 142.420927407592 43.7961135098038, 142.421648832868 43.7955228710944, 142.422808189005 43.7962687643631)) ^^http://www.opengis.net/ont/geosparql#wktLiteral