メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.372241779304 43.7733148356823, 142.372323063987 43.7734679988559, 142.372515906757 43.7737952487386, 142.372922589024 43.7745475611443, 142.372715047688 43.7746607000138, 142.372276371682 43.7748884614266, 142.372242903076 43.7749058311977, 142.371900415894 43.7750604945221, 142.371507514733 43.7752033613221, 142.371412527633 43.77523790111, 142.370856679324 43.7742764621997, 142.3705877094 43.7738148343705, 142.370281367871 43.7732795659345, 142.371304535432 43.7730086374712, 142.371958132253 43.7728031745076, 142.372091867961 43.7730458372969, 142.372241779304 43.7733148356823)) ^^http://www.opengis.net/ont/geosparql#wktLiteral