メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353136684352 43.0327042019715, 141.352939253306 43.0326935816883, 141.352574114124 43.032665399316, 141.351828131792 43.0326210041885, 141.351967221608 43.0313856880754, 141.352071931983 43.0312854447299, 141.352472602185 43.031078511754, 141.352370924394 43.0322933044171, 141.353152706622 43.032360973836, 141.353136684352 43.0327042019715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral