メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.351785074903 43.769640478563, 142.351343943583 43.7697570466238, 142.350989863637 43.7698647103008, 142.350674290105 43.7693290229367, 142.35037695944 43.7687903127222, 142.351873342585 43.7683546492775, 142.352178082513 43.7688834322729, 142.352187767201 43.7689002302969, 142.352498847729 43.7694402946963, 142.352476225341 43.7694466268533, 142.351785074903 43.769640478563)) ^^http://www.opengis.net/ont/geosparql#wktLiteral