メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.860023110481 35.408973947525, 136.859779483003 35.4089923377678, 136.859566543707 35.4090047497454, 136.859339692565 35.4090171981295, 136.859050143637 35.4089991345528, 136.858705710754 35.4089601564108, 136.858874841148 35.4077588539378, 136.859390601003 35.4077779885611, 136.860057007418 35.4078012444208, 136.860043504862 35.4083804220959, 136.860023110481 35.408973947525)) ^^http://www.opengis.net/ont/geosparql#wktLiteral