メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.776336976951 43.2053887420695, 141.776922463682 43.2057143186293, 141.776817202194 43.2058750074425, 141.776736386736 43.2060447270502, 141.776698317556 43.206219056528, 141.77669159006 43.2064808603714, 141.776125795707 43.2061626788328, 141.77577619272 43.20596142974, 141.775426528052 43.205768338866, 141.775344629312 43.2057230599536, 141.775925360083 43.2051323133008, 141.776147224704 43.2052479359727, 141.776364158042 43.2053610047101, 141.776336976951 43.2053887420695)) ^^http://www.opengis.net/ont/geosparql#wktLiteral