メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.228990367376 36.0427853194206, 136.23049388202 36.0427941492719, 136.23182957621 36.0427954999761, 136.231878644894 36.0428301768693, 136.232399060372 36.042834132149, 136.233158823711 36.0434374232693, 136.232588482217 36.0439450885398, 136.231619042078 36.0447877142916, 136.230462046703 36.0448182617919, 136.229129190358 36.0448573941965, 136.228552464512 36.0448750711804, 136.226818172285 36.0449443814254, 136.226812489264 36.0435075595627, 136.226800207347 36.0428196169056, 136.228990367376 36.0427853194206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral