メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342930350351 43.0461909789581, 141.342887804079 43.0464818074891, 141.342829720658 43.0469354663828, 141.342798845814 43.0471304570806, 141.342372491854 43.0471056245074, 141.342102690194 43.0470899801379, 141.341855500402 43.0470755697106, 141.34134720407 43.0470412209822, 141.34139343113 43.0466964793355, 141.341436654285 43.0463602946943, 141.341473105121 43.0460865793046, 141.341524360764 43.0456998209173, 141.342969997204 43.0457975165218, 141.342975049282 43.0458515698867, 141.342930350351 43.0461909789581)) ^^http://www.opengis.net/ont/geosparql#wktLiteral