メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.757853801623 35.4314470604897, 136.757588451232 35.4313466332901, 136.755837531346 35.4311166402805, 136.755666859554 35.4310942351991, 136.756470805624 35.429078600068, 136.757671528999 35.4292819500058, 136.758180150434 35.4293125248279, 136.758198216038 35.4295604247182, 136.757853801623 35.4314470604897)) ^^http://www.opengis.net/ont/geosparql#wktLiteral