メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.563553848273 33.177394230178, 130.563892247708 33.1784574634388, 130.56307343492 33.1787621134517, 130.562473032726 33.1777332401544, 130.563553848273 33.177394230178)) ^^http://www.opengis.net/ont/geosparql#wktLiteral