メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.04619342473 42.920588105507, 143.044645837097 42.9204731532916, 143.044820263618 42.9192800287532, 143.046325616739 42.9193724834399, 143.04619342473 42.920588105507)) ^^http://www.opengis.net/ont/geosparql#wktLiteral