メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.017967422275 35.6808574619921, 140.01744032817 35.6811698105491, 140.017326758475 35.6809314078613, 140.017203212484 35.6806693940625, 140.017324031877 35.6805909847228, 140.017617446326 35.6804005639274, 140.017706088006 35.6805336945726, 140.017967422275 35.6808574619921)) ^^http://www.opengis.net/ont/geosparql#wktLiteral