メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.00648993584 34.8887114558794, 137.006098809901 34.8891138535201, 137.006047639853 34.8891487176142, 137.005976212645 34.8891783423427, 137.005826280121 34.8892507537461, 137.005753961075 34.8892826317702, 137.005695714311 34.8893304450505, 137.005565101734 34.8894333771989, 137.003630816562 34.8881396878895, 137.003580521527 34.8881158143726, 137.003499193766 34.8880733066351, 137.003551740586 34.8880284443918, 137.003914555219 34.8876616521969, 137.004302052831 34.8872535515884, 137.00648993584 34.8887114558794)) ^^http://www.opengis.net/ont/geosparql#wktLiteral