メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.385766475909 43.7993409472568, 142.386174430537 43.7996452982115, 142.3867931676 43.8001067262225, 142.385995534973 43.8006905343349, 142.384790370796 43.8015693584888, 142.384296320064 43.8019082892045, 142.383619405736 43.8014225133868, 142.383335719144 43.8012410911284, 142.382885832406 43.8009309238273, 142.382620272774 43.8007128420107, 142.383118092985 43.8003529233275, 142.384329588356 43.7994847301283, 142.384346295192 43.7994725968118, 142.385132518254 43.7988979560104, 142.385766475909 43.7993409472568)) ^^http://www.opengis.net/ont/geosparql#wktLiteral