メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.937055167797 35.4891996085245, 136.936894208541 35.4897596749917, 136.936740081931 35.4902551788394, 136.935416843321 35.4899768717064, 136.93558270525 35.4894832930524, 136.935719673319 35.4890215245036, 136.935812259571 35.4886713228064, 136.936186752472 35.4886714431934, 136.936785245874 35.488795791463, 136.937156015381 35.4888789628439, 136.937055167797 35.4891996085245)) ^^http://www.opengis.net/ont/geosparql#wktLiteral