メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.700574266195 44.3613770700368, 141.699969366334 44.361762219712, 141.699794219277 44.3616261589505, 141.699577883422 44.3614613518337, 141.699390810454 44.3613115902477, 141.698917283403 44.3609342065138, 141.699566753302 44.3605199925652, 141.699826276436 44.3603426115033, 141.699982899382 44.3602322336244, 141.701035215364 44.3610828790312, 141.700921873059 44.3611555666752, 141.700574266195 44.3613770700368)) ^^http://www.opengis.net/ont/geosparql#wktLiteral