メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.28611148218 43.0736214951279, 141.286689272739 43.0736900771188, 141.286763142854 43.0736961144454, 141.287345293821 43.0737437007852, 141.286731289619 43.0740698564255, 141.286500126514 43.0742019590781, 141.285709660087 43.0746399241156, 141.285377151811 43.0743278144361, 141.28532875671 43.0742878817991, 141.284555803558 43.0735917864424, 141.284788478606 43.0734428924921, 141.284982666081 43.0733011985184, 141.285256117924 43.0734269320038, 141.285636866691 43.0735378141671, 141.28611148218 43.0736214951279)) ^^http://www.opengis.net/ont/geosparql#wktLiteral