メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.276063827391 44.0199310738268, 144.27446303083 44.0197825560257, 144.27457257025 44.019216392627, 144.274576701756 44.0191946549047, 144.274594307383 44.0191966106422, 144.276176085844 44.0193708371689, 144.276063827391 44.0199310738268)) ^^http://www.opengis.net/ont/geosparql#wktLiteral