メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.344305764784 43.0465653414945, 141.344279481131 43.0467549541893, 141.344247373777 43.0470341198409, 141.343615673114 43.0469990155402, 141.343554024393 43.0469853748061, 141.34326909537 43.0469551260509, 141.342829720658 43.0469354663828, 141.342887804079 43.0464818074891, 141.342930350351 43.0461909789581, 141.342975049282 43.0458515698867, 141.343558145783 43.0458719456015, 141.344131849792 43.0458919631038, 141.344123393692 43.0460756674615, 141.344356236411 43.046093757395, 141.344351974819 43.0462269988267, 141.344305764784 43.0465653414945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral