メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.334322722973 43.0357334867785, 141.334301726749 43.0357979514336, 141.333982335321 43.036141840658, 141.333400948219 43.036702287307, 141.332913963685 43.0364467450605, 141.332273352109 43.0360908752082, 141.332946781569 43.0355756901043, 141.332958035302 43.0355668482146, 141.33334092862 43.0352660885949, 141.333472365395 43.0351699445068, 141.333670679789 43.035024964523, 141.334358217632 43.0354290995353, 141.334322722973 43.0357334867785)) ^^http://www.opengis.net/ont/geosparql#wktLiteral