メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.99991908824 43.5537553153862, 144.999304668878 43.554242226252, 144.99884141309 43.5539251639342, 144.998642031999 43.5537888675058, 144.998671663705 43.5537644220184, 144.998814933511 43.5536428494633, 144.99891224467 43.553705220519, 144.998932558027 43.5537198403678, 144.999396924097 43.5533335271702, 144.999350992149 43.5531613674548, 144.999753790039 43.5531020261086, 144.999840404392 43.5534074801441, 144.99991908824 43.5537553153862)) ^^http://www.opengis.net/ont/geosparql#wktLiteral