メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.372869322122 34.8128313053819, 137.37253953395 34.8132651543934, 137.373452166969 34.8135633615054, 137.375146345549 34.8141147654129, 137.375051096905 34.8143094588494, 137.373575732802 34.8137997995691, 137.373542920626 34.813887471858, 137.373239611704 34.8138072721916, 137.373302253615 34.8137213812837, 137.371343634558 34.8131472827871, 137.371349927841 34.8131027600777, 137.371046947747 34.8130250848479, 137.371088645703 34.8128272460479, 137.37131957128 34.8123066605655, 137.372869322122 34.8128313053819)) ^^http://www.opengis.net/ont/geosparql#wktLiteral