メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.633004794407 35.3599771753612, 136.632973131166 35.3599752047048, 136.631642795162 35.3598991782095, 136.631698077478 35.3593242117738, 136.633046236619 35.3594073579049, 136.633044770953 35.3594210843963, 136.633004794407 35.3599771753612)) ^^http://www.opengis.net/ont/geosparql#wktLiteral