メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.394611040521 43.749214165156, 142.394656232164 43.7497124580999, 142.392621031866 43.7498275427726, 142.390596447328 43.7499263338763, 142.390553299864 43.7494341891834, 142.39050979389 43.7489530325747, 142.391677240958 43.7488969817112, 142.392533950981 43.7488447319589, 142.393051758121 43.7488167884702, 142.394567510631 43.7487364016965, 142.394568446577 43.7487466150305, 142.394611040521 43.749214165156)) ^^http://www.opengis.net/ont/geosparql#wktLiteral