メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.821799537652 34.6828748520905, 135.821501694763 34.6828768123562, 135.821478660223 34.6826491465061, 135.821224667033 34.6826694825301, 135.820721854773 34.682717062553, 135.820682743902 34.6824578200529, 135.820590600927 34.681980868962, 135.821869893115 34.6819892170683, 135.8218718529 34.6820721330674, 135.821876686109 34.6822767251834, 135.821865377853 34.6825015237682, 135.821794059173 34.6825008564742, 135.821799261494 34.6828559712829, 135.821799537652 34.6828748520905)) ^^http://www.opengis.net/ont/geosparql#wktLiteral