メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.992160630775 43.550664535393, 144.991180138208 43.5514795422924, 144.990856715978 43.5512639716612, 144.990746346191 43.5511966884629, 144.990279625607 43.5509039696812, 144.989988720318 43.5507102939791, 144.989811861949 43.5505924632955, 144.989970869615 43.5504616884391, 144.990327915028 43.5501867913549, 144.990792178666 43.550497922383, 144.990842768317 43.5505261716082, 144.991325208669 43.5501256976485, 144.992160630775 43.550664535393)) ^^http://www.opengis.net/ont/geosparql#wktLiteral