メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.461967637162 40.8083737820624, 140.463366144479 40.808607837421, 140.464534707741 40.808797451143, 140.464513044118 40.8089972668611, 140.464470426365 40.8092689189445, 140.464382043273 40.8095483068268, 140.464292275758 40.8097056199697, 140.463270863948 40.8095447577422, 140.461709463977 40.8092881554681, 140.460001792089 40.8090236035137, 140.459917494547 40.8081454181192, 140.460262879754 40.8081340090961, 140.460591741436 40.8081382355018, 140.460862808697 40.8081859668827, 140.461967637162 40.8083737820624)) ^^http://www.opengis.net/ont/geosparql#wktLiteral