メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.333961017622 43.0620340877164, 141.333810724633 43.0626516411877, 141.333647192577 43.0632433474933, 141.33318024387 43.0631803156732, 141.332851521267 43.0631359739244, 141.332552853903 43.0630959513073, 141.332096908035 43.0630349028789, 141.332258426372 43.0624312975037, 141.332424094114 43.0618257562719, 141.332918472012 43.0618883068992, 141.333961017622 43.0620340877164)) ^^http://www.opengis.net/ont/geosparql#wktLiteral