メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.427216308204 43.0521918599787, 141.427553422981 43.0531168034259, 141.427695524919 43.0534995054937, 141.427360621707 43.053557866128, 141.426926187142 43.0536294362692, 141.426470848826 43.0537150609805, 141.426180181008 43.0537643117385, 141.425921463402 43.0535113017114, 141.425822110331 43.0536258574176, 141.425655360937 43.0540756858732, 141.42527903075 43.0537321562592, 141.424382545582 43.0528364422729, 141.424933696326 43.0525136588181, 141.425581318741 43.0521621692649, 141.42635060632 43.0518626812773, 141.427045059283 43.0516728582192, 141.427216308204 43.0521918599787)) ^^http://www.opengis.net/ont/geosparql#wktLiteral