メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.394257174593 43.7458646309096, 142.394291373543 43.746336322518, 142.39429383099 43.7463700566752, 142.394330477032 43.7467054793788, 142.392919256841 43.7467714235521, 142.392554765334 43.7467945180414, 142.391007531799 43.7469019723745, 142.390318682309 43.7469225556935, 142.390274582072 43.7463780394807, 142.390258872837 43.746313169259, 142.390222828961 43.7458843395298, 142.392251812298 43.745774421246, 142.392978074447 43.7457364454419, 142.394256711738 43.7456717934044, 142.394257174593 43.7458646309096)) ^^http://www.opengis.net/ont/geosparql#wktLiteral