メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.299769586703 43.1155897284175, 141.299684120995 43.1156349438716, 141.29860745366 43.1146157426886, 141.298252491696 43.1142667787503, 141.298313436039 43.1142118654044, 141.298672744154 43.1140139196498, 141.299086039014 43.1137824524538, 141.299268970936 43.1136978879442, 141.300671877933 43.1150182605007, 141.300358026186 43.1151944350407, 141.300410915444 43.1152506445096, 141.299769586703 43.1155897284175)) ^^http://www.opengis.net/ont/geosparql#wktLiteral