メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.629178519941 35.3578121131513, 136.628828511111 35.3578605556834, 136.628459991888 35.3578742664239, 136.628453428279 35.3578011384386, 136.627996983391 35.3578000903144, 136.628017762879 35.3573243380802, 136.62919824801 35.3573123423053, 136.629179602331 35.3577850757316, 136.629178519941 35.3578121131513)) ^^http://www.opengis.net/ont/geosparql#wktLiteral