メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.805479638881 38.0805296107668, 140.805165264694 38.0807298768145, 140.80213258856 38.0788443697327, 140.802180730103 38.0787528729297, 140.806642438478 38.078915779876, 140.807944148684 38.0789602479844, 140.807617503338 38.0791682603969, 140.807088368094 38.0795051891359, 140.806631057186 38.0797963752751, 140.805479638881 38.0805296107668)) ^^http://www.opengis.net/ont/geosparql#wktLiteral