メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.419877157241 43.7453033975845, 142.419197790903 43.7453363197474, 142.418568791628 43.7453783059978, 142.41851209763 43.7448094556389, 142.418448228049 43.7443328769858, 142.419088691871 43.7443053954793, 142.419774894117 43.7442712166522, 142.419877157241 43.7453033975845)) ^^http://www.opengis.net/ont/geosparql#wktLiteral