メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.862438449612 35.1783860436982, 136.862457524006 35.1786965121822, 136.862456805966 35.1790531279455, 136.862458812423 35.1794098911341, 136.861202307612 35.1793922297438, 136.861132542222 35.1790593091832, 136.861094887288 35.1787009064768, 136.861069992067 35.1783947190119, 136.861058996733 35.1780868756708, 136.862430172478 35.1780783489836, 136.862441795833 35.1783391511815, 136.862438449612 35.1783860436982)) ^^http://www.opengis.net/ont/geosparql#wktLiteral