メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.472945719882 43.0517657985197, 141.472956413424 43.0518037792725, 141.472968589227 43.0519673820454, 141.472948071327 43.0520923612774, 141.472928430043 43.0521821111614, 141.4707731567 43.0514023163688, 141.4712679069 43.0509544417772, 141.471718724305 43.0505599984787, 141.47203110857 43.0502983827649, 141.472309416021 43.0500885079544, 141.472668572319 43.0509907650928, 141.472730712729 43.051146689961, 141.472796312973 43.0512982064274, 141.47285222294 43.0514386858123, 141.472889359345 43.051565956262, 141.472945719882 43.0517657985197)) ^^http://www.opengis.net/ont/geosparql#wktLiteral