メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.973466928478 43.5406472552856, 144.973430295171 43.5406237285193, 144.973234393696 43.5404937745336, 144.97297682484 43.5403253133537, 144.972791975144 43.5402131669292, 144.972662908875 43.5401290834993, 144.972515556408 43.5400338688755, 144.973290977491 43.539415636187, 144.973343401465 43.5393734605909, 144.973394579379 43.5394065918642, 144.9734790058 43.5394610785837, 144.974183656707 43.5399364702821, 144.97425539871 43.5399840178245, 144.974288488296 43.540006117616, 144.973466928478 43.5406472552856)) ^^http://www.opengis.net/ont/geosparql#wktLiteral