メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.965208613634 43.5487148757533, 144.964294660773 43.548143598882, 144.965037433917 43.5475304564337, 144.965836909757 43.548062856378, 144.965449079953 43.5483949778689, 144.96554027209 43.5484493107319, 144.965208613634 43.5487148757533)) ^^http://www.opengis.net/ont/geosparql#wktLiteral