メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362851095811 43.0844014401824, 141.362845414913 43.0844359973852, 141.362716036474 43.084956481368, 141.361993102195 43.0848593780793, 141.361327245155 43.0847698862654, 141.361023478969 43.084729057158, 141.361160608373 43.0841843722998, 141.36123301146 43.0838953922605, 141.36131060751 43.0835856342985, 141.362984497623 43.0838147373286, 141.362851095811 43.0844014401824)) ^^http://www.opengis.net/ont/geosparql#wktLiteral