メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.384220973851 43.7758360467083, 142.384923147452 43.775634292868, 142.38547620099 43.7766532296748, 142.383204070272 43.77726664922, 142.383177149552 43.7772169276664, 142.382978027084 43.7768563681741, 142.382707316113 43.7763674491543, 142.382722098996 43.7763632178545, 142.382812115469 43.7763378240022, 142.384275756315 43.7759238801728, 142.384220973851 43.7758360467083)) ^^http://www.opengis.net/ont/geosparql#wktLiteral