メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.699969366334 44.361762219712, 141.699429302292 44.3620939599947, 141.698881007937 44.3624665442209, 141.69780752344 44.3616216463409, 141.698346207937 44.3612859722667, 141.698917283403 44.3609342065138, 141.699390810454 44.3613115902477, 141.699577883422 44.3614613518337, 141.699794219277 44.3616261589505, 141.699969366334 44.361762219712)) ^^http://www.opengis.net/ont/geosparql#wktLiteral