メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.050559497462 42.9059029417186, 143.051306088948 42.9059589826603, 143.051144469154 42.9072043050405, 143.050377624657 42.9071518501748, 143.0496709015 42.9071020656761, 143.04982017498 42.9058541588806, 143.050559497462 42.9059029417186)) ^^http://www.opengis.net/ont/geosparql#wktLiteral