メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.979111430454 43.5472775344432, 144.978721518711 43.5475832432526, 144.978654166016 43.5475389680443, 144.977597569114 43.5468427002338, 144.978269415534 43.5463149820187, 144.978600422797 43.5463790465976, 144.979389139502 43.5469149813993, 144.979363621745 43.5469364756313, 144.979463058509 43.5470018871619, 144.979111430454 43.5472775344432)) ^^http://www.opengis.net/ont/geosparql#wktLiteral