メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.01397345791 36.7448138137991, 137.013799375839 36.7450742914005, 137.013423257902 36.7449384247867, 137.013569428639 36.744724984935, 137.013619491799 36.7447430924632, 137.013668083345 36.7446692353447, 137.013689000236 36.7446420796679, 137.013815980697 36.7447025207281, 137.013793825326 36.7447332652299, 137.013900057539 36.7447809006802, 137.01397345791 36.7448138137991)) ^^http://www.opengis.net/ont/geosparql#wktLiteral