メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.905672709481 43.4949549456297, 141.905665006699 43.4949293241575, 141.905503938008 43.4943822635634, 141.905356214087 43.4938879529129, 141.906119299016 43.4937735038793, 141.906144893027 43.4937698179287, 141.906475618021 43.494825529346, 141.90643979741 43.4948312937991, 141.905672709481 43.4949549456297)) ^^http://www.opengis.net/ont/geosparql#wktLiteral