メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.861895895544 35.3845015877357, 136.860514168716 35.3833821192094, 136.862375137604 35.381850858153, 136.863073207785 35.382425495563, 136.863746607518 35.3829881666519, 136.861895895544 35.3845015877357)) ^^http://www.opengis.net/ont/geosparql#wktLiteral