メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.981862777064 37.2895451447074, 140.98204429352 37.289754149535, 140.981670362375 37.2900141699146, 140.981474403812 37.2897996730762, 140.981862777064 37.2895451447074)) ^^http://www.opengis.net/ont/geosparql#wktLiteral