メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.34890355188 44.4825787713772, 142.348015022617 44.4823552408556, 142.348387277724 44.4816151948117, 142.349281844258 44.4818284514565, 142.34890355188 44.4825787713772)) ^^http://www.opengis.net/ont/geosparql#wktLiteral