メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.245246669315 38.0360589189049, 138.243712087775 38.0362557650489, 138.242240997444 38.0361166837601, 138.242238616547 38.0360788093999, 138.241987733828 38.0360706546896, 138.242017456404 38.0356358442116, 138.242472696588 38.0357603115022, 138.242642927314 38.0358113668054, 138.242842565339 38.0358657246001, 138.243024740822 38.0358931542567, 138.243377112093 38.0359315161757, 138.243704739908 38.0359582756901, 138.243866450369 38.0359586292168, 138.244214778093 38.0359008247673, 138.245217286165 38.0357111235564, 138.245246669315 38.0360589189049)) ^^http://www.opengis.net/ont/geosparql#wktLiteral