メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.888503548254 35.2479318155366, 136.888501028505 35.2483900528345, 136.888484583168 35.2490907942581, 136.886676554936 35.2490942028127, 136.88666099237 35.2485485306625, 136.886681394405 35.2480604063534, 136.886683585152 35.2479667492519, 136.886673590405 35.2473381311393, 136.886795216021 35.2473429914397, 136.887175555828 35.2472801427658, 136.887861267582 35.2471795499804, 136.887861493964 35.2471138455287, 136.887863748716 35.2470637799017, 136.888505578977 35.2470668145743, 136.888503548254 35.2479318155366)) ^^http://www.opengis.net/ont/geosparql#wktLiteral