メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.603317641688 42.6340999080875, 141.604044861322 42.634528845941, 141.603963033374 42.6347589457814, 141.603874843159 42.6349641116804, 141.603672243139 42.6356977005783, 141.603431815305 42.6364179933168, 141.602157685348 42.6359789213795, 141.601138360154 42.635632858825, 141.600411725629 42.6353857951765, 141.600990283496 42.6347795453172, 141.601520202707 42.6342235170093, 141.602261022815 42.6334866497097, 141.603257901896 42.6340603226756, 141.603317641688 42.6340999080875)) ^^http://www.opengis.net/ont/geosparql#wktLiteral