メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.779398155373 35.443893164269, 136.778337367415 35.4439608667365, 136.778290340349 35.4435935388879, 136.778284001436 35.4435336958033, 136.779350100993 35.4434878402149, 136.779398155373 35.443893164269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral