メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.389024956089 42.9831591695521, 144.388458701544 42.9827677796019, 144.388302219312 42.9826692264751, 144.388124567272 42.9825733897011, 144.387792496381 42.9824384553929, 144.387641388585 42.9823953577798, 144.387882373769 42.9816437034645, 144.388576780529 42.9818419058591, 144.38902991891 42.9820099461188, 144.38932964025 42.982151178499, 144.389343162884 42.982159927177, 144.389024956089 42.9831591695521)) ^^http://www.opengis.net/ont/geosparql#wktLiteral