メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.044953720861 43.562966151196, 142.046144019998 43.5630033432846, 142.046894574553 43.5630436698451, 142.046891065086 43.56307035014, 142.046812037738 43.5636713366024, 142.046692211137 43.5643158505545, 142.044828748145 43.564240899665, 142.043348488726 43.5641745599101, 142.042526290422 43.564138141697, 142.042634314803 43.5628752436666, 142.043468605953 43.5628971979615, 142.044953720861 43.562966151196)) ^^http://www.opengis.net/ont/geosparql#wktLiteral