メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.400233321227 43.7715011883046, 142.400217625844 43.7715021754635, 142.39962371207 43.7715395323217, 142.399061889664 43.7715662429759, 142.398466963023 43.7715964391141, 142.396974966661 43.7716858643243, 142.396910099968 43.7711944811154, 142.396848613797 43.7707065050167, 142.398355796723 43.7706222490478, 142.399518417662 43.7705676731585, 142.40012263395 43.7705403424294, 142.400868676701 43.7704862937871, 142.400929480059 43.7709937828774, 142.400971880426 43.7714714450889, 142.400233321227 43.7715011883046)) ^^http://www.opengis.net/ont/geosparql#wktLiteral