メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.270199489409 35.2637012426826, 136.270090728518 35.2638141586575, 136.269524770155 35.2635090854311, 136.269826821963 35.2633094041099, 136.269946165655 35.2633538556627, 136.270199017614 35.2635580777485, 136.270199489409 35.2637012426826)) ^^http://www.opengis.net/ont/geosparql#wktLiteral