メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.655969030814 43.9355761163009, 141.655179574735 43.9356775605443, 141.654853102934 43.9343425774063, 141.654682857541 43.9337343459284, 141.654514559988 43.9331166249361, 141.655625252733 43.9329644142333, 141.656533610273 43.9328205089871, 141.656829458478 43.932649884478, 141.657268343931 43.9329780576083, 141.656797809771 43.9332830354944, 141.657050590071 43.9344245431408, 141.657283502096 43.9353826858616, 141.655969030814 43.9355761163009)) ^^http://www.opengis.net/ont/geosparql#wktLiteral