メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.383402854965 42.9849564553213, 144.382569697059 42.9848071577453, 144.382555755663 42.9848693057232, 144.381007617834 42.9845974626742, 144.381028221759 42.9845340653653, 144.381072215819 42.9843990612872, 144.381219627254 42.9839472026656, 144.383612047704 42.9843583560713, 144.383606333335 42.9843759038647, 144.383402854965 42.9849564553213)) ^^http://www.opengis.net/ont/geosparql#wktLiteral