メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.049163465213 42.9158897903251, 143.049908986673 42.915942612707, 143.049752428854 42.9170809760108, 143.04900439296 42.9170270444921, 143.048259309859 42.9169793469935, 143.048387963736 42.9158454705088, 143.048388693398 42.9158389953207, 143.049163465213 42.9158897903251)) ^^http://www.opengis.net/ont/geosparql#wktLiteral