メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> MULTIPOLYGON(((137.13980541177 35.0651196543105, 137.139614787594 35.0649434670547, 137.140305544797 35.0644382604786, 137.140496168152 35.0646144466674, 137.13980541177 35.0651196543105)), ((137.138348711926 35.0663625859388, 137.138124361701 35.066218784092, 137.139029070708 35.0655119404344, 137.139253147986 35.0656829260045, 137.138348711926 35.0663625859388))) ^^http://www.opengis.net/ont/geosparql#wktLiteral