メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.361271855971 43.0614320070301, 141.362030825007 43.0615388909802, 141.361779562937 43.0625065781778, 141.361773171507 43.0625506249903, 141.361695103748 43.0628427348898, 141.361612943061 43.0631501554178, 141.36154969799 43.0633867988248, 141.361451846687 43.0633745055966, 141.360788606849 43.0632858737164, 141.360508763697 43.0632493774439, 141.360150321339 43.0632027054863, 141.359992834435 43.0631821406315, 141.360113596564 43.0627310706428, 141.360165817137 43.0625358190431, 141.36022837426 43.0623023181665, 141.360500456836 43.0613225593213, 141.361271855971 43.0614320070301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral