メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.248967108009 35.2587559903471, 136.248859220277 35.2588036060661, 136.248769809239 35.2588492809051, 136.24843140546 35.2584332958467, 136.248676843425 35.258260331566, 136.24879541024 35.2584721249248, 136.248967108009 35.2587559903471)) ^^http://www.opengis.net/ont/geosparql#wktLiteral