メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.773992192258 43.2106428968231, 141.773880129034 43.2107546746481, 141.773323322216 43.2113358060959, 141.772631926906 43.2110120170512, 141.772284015258 43.2108321440784, 141.772856242133 43.2102398328926, 141.773204347533 43.2098625645197, 141.773279886245 43.2100216797285, 141.77332061822 43.2100570839618, 141.773378879579 43.2101073289016, 141.77350106432 43.210177954659, 141.77371828673 43.2102866713174, 141.773946795431 43.2104154072655, 141.7741159241 43.2105143578622, 141.773992192258 43.2106428968231)) ^^http://www.opengis.net/ont/geosparql#wktLiteral