メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.539825705474 37.8715134618764, 140.539713129715 37.8720129322542, 140.538465106361 37.8718994595555, 140.538571657038 37.871433109306, 140.539042443458 37.8715181456895, 140.539395114755 37.8715367319364, 140.539688699764 37.8715194912027, 140.539825705474 37.8715134618764)) ^^http://www.opengis.net/ont/geosparql#wktLiteral