メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.422019027336 43.7996396262083, 142.422118714863 43.7996995498767, 142.422423325172 43.7998833003399, 142.422633805885 43.8000191267974, 142.422798805569 43.8001325011442, 142.423132332245 43.8003467430042, 142.423207079424 43.800380665602, 142.423644658969 43.8006643149182, 142.422507391396 43.8016136283784, 142.422076899518 43.8013430977599, 142.42168259634 43.8010832873869, 142.421281971006 43.8008435256322, 142.420882194843 43.8005812251531, 142.420487078316 43.8003470269528, 142.421628528849 43.7993819187838, 142.422019027336 43.7996396262083)) ^^http://www.opengis.net/ont/geosparql#wktLiteral