メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.38321447288 42.9795063860388, 144.383280542047 42.9801646814479, 144.382479919876 42.9801954437841, 144.38224717112 42.979541804232, 144.382233507189 42.9795011995855, 144.3822921913 42.9794144457762, 144.382551375905 42.979032446603, 144.382786860358 42.9786852087742, 144.382803808945 42.9786601374009, 144.383653083023 42.9792886264241, 144.383910533584 42.9794767297045, 144.38321447288 42.9795063860388)) ^^http://www.opengis.net/ont/geosparql#wktLiteral