メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((127.670209754067 26.1411602697032, 127.670116732605 26.1414553360596, 127.669909049882 26.1414186102064, 127.669280609814 26.1412709904103, 127.668725644121 26.1411393454465, 127.668782800232 26.1409198863701, 127.669627220451 26.1411166103266, 127.669658070114 26.1410118627334, 127.670209754067 26.1411602697032)) ^^http://www.opengis.net/ont/geosparql#wktLiteral