メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.343231373019 43.7475300276569, 142.343827981473 43.7477132628854, 142.344360452111 43.7478760146851, 142.344892469645 43.748045375801, 142.345444673337 43.748220342189, 142.344795130932 43.7493498144168, 142.344543360339 43.7497706893068, 142.343865239262 43.7495619639189, 142.342929660289 43.7492700630991, 142.342655487642 43.7491898958675, 142.341565055239 43.748849572288, 142.341874486914 43.7483276762134, 142.342171855293 43.7478129791154, 142.342488598553 43.7472993551333, 142.343231373019 43.7475300276569)) ^^http://www.opengis.net/ont/geosparql#wktLiteral