メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.175719812723 34.6830236990365, 135.176491249899 34.6834961414941, 135.176297182233 34.6837296166196, 135.175866696388 34.6843253198767, 135.175614018963 34.6841602950667, 135.175157818613 34.6838344112849, 135.174506727729 34.6836608706086, 135.174981143231 34.6830919126899, 135.175266803035 34.6827428674723, 135.175719812723 34.6830236990365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral