メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.27712558164 44.0206343218027, 144.277159739034 44.0206244173106, 144.278643034965 44.020784058825, 144.278212572559 44.0212024802888, 144.277031598058 44.0210901608381, 144.275841633865 44.0209655859359, 144.275931237817 44.0205067293425, 144.27712558164 44.0206343218027)) ^^http://www.opengis.net/ont/geosparql#wktLiteral