メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.885472025591 43.3306083671879, 141.885716748161 43.3306396617712, 141.886034315675 43.3306737177309, 141.886519285743 43.3307354465111, 141.888169621819 43.3309604773011, 141.888170250015 43.33098439066, 141.88819128139 43.3317715078421, 141.885383832154 43.331172125014, 141.884717790114 43.3310399814416, 141.884315196524 43.3309500233904, 141.884081048025 43.3308586282799, 141.883833269961 43.3307389168087, 141.883647486116 43.330644578515, 141.883666925306 43.3303847064558, 141.884936819597 43.3305415521488, 141.885472025591 43.3306083671879)) ^^http://www.opengis.net/ont/geosparql#wktLiteral