メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.352933668833 43.7926426175882, 142.352949425833 43.7926315804053, 142.353837219294 43.7932788126474, 142.353265571907 43.793695023713, 142.352717753753 43.7940843304134, 142.351852047186 43.7934523836952, 142.351706644582 43.7935579613368, 142.350896991493 43.7930196970622, 142.351610737756 43.7925057630098, 142.352177127614 43.7920944687448, 142.352933668833 43.7926426175882)) ^^http://www.opengis.net/ont/geosparql#wktLiteral