メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.202937880795 42.9998069635396, 143.201887460046 42.9997543175414, 143.201996225029 42.998874373416, 143.20260840113 42.9989111201398, 143.203331245658 42.9989724688652, 143.203010742032 42.999573990277, 143.202969338671 42.9996725137784, 143.202937880795 42.9998069635396)) ^^http://www.opengis.net/ont/geosparql#wktLiteral