メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.880305058046 43.3258636489607, 141.880075585004 43.3258917450525, 141.880026616231 43.3258964404419, 141.878578015114 43.3260709654727, 141.878223475162 43.326114336914, 141.877934363319 43.3251923876888, 141.877595033845 43.3240411461682, 141.878955125445 43.3238675434846, 141.882593480438 43.3233597133847, 141.882737617159 43.323562436691, 141.882859422179 43.3238103802161, 141.883027466816 43.3240584711923, 141.883134133061 43.3242613562054, 141.883302180084 43.3245094468094, 141.883470636074 43.3246900235976, 141.883669987132 43.3248594461022, 141.884001834306 43.3250882196519, 141.884335742771 43.3253312031711, 141.883172961342 43.3254880003782, 141.881090464932 43.325762649111, 141.880305058046 43.3258636489607)) ^^http://www.opengis.net/ont/geosparql#wktLiteral