メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.336356454816 43.109259180265, 141.336951144117 43.109935148169, 141.335771216913 43.1105735591858, 141.334611948116 43.1092449898039, 141.335199932752 43.1089456076763, 141.335501436845 43.1087909123189, 141.335838689042 43.1086398078633, 141.336062695031 43.1088935860806, 141.336356454816 43.109259180265)) ^^http://www.opengis.net/ont/geosparql#wktLiteral