メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.903053325853 43.4775636426439, 141.903324626375 43.4785303365509, 141.902778492227 43.4786137468213, 141.902293299136 43.4786878430836, 141.901980089722 43.4777190510597, 141.902014931483 43.4777143731052, 141.901869950766 43.4771201928076, 141.901431341405 43.4771787326882, 141.901429118466 43.4771687630651, 141.901359442114 43.4768873568731, 141.901796725009 43.476820793775, 141.901794227001 43.4768100743983, 141.901791205923 43.4767974649179, 141.901766401534 43.4766958139148, 141.90277173709 43.4765479041091, 141.903053325853 43.4775636426439)) ^^http://www.opengis.net/ont/geosparql#wktLiteral