メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.990362160575 43.5633006581106, 144.98948596616 43.562732053686, 144.989538633857 43.5626865600618, 144.990871670239 43.5615344121477, 144.990940414145 43.5616385567411, 144.991212967081 43.5620317071923, 144.991428361849 43.5623244418583, 144.991492933544 43.5623835429644, 144.990362160575 43.5633006581106)) ^^http://www.opengis.net/ont/geosparql#wktLiteral