メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.328923506039 43.051640934664, 141.329896140325 43.0517100895292, 141.329843112279 43.0520880352707, 141.329814988461 43.0523334001015, 141.329792484887 43.0524913899103, 141.329743753103 43.052864094988, 141.328006479901 43.052762826414, 141.328052251324 43.0523644277431, 141.328060847017 43.0522899473507, 141.328097575098 43.0519701747885, 141.328132275704 43.0517088288466, 141.328145797699 43.0516064670006, 141.328147635247 43.0515926274669, 141.328923506039 43.051640934664)) ^^http://www.opengis.net/ont/geosparql#wktLiteral