メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.412196418236 43.7698207971697, 142.412930361597 43.769787716948, 142.412985378881 43.7706118540261, 142.413001037651 43.7708465159493, 142.412332428159 43.7708855170293, 142.411768858584 43.7709105496657, 142.411597028055 43.7709557779312, 142.411086329527 43.7711053443803, 142.410523623402 43.7714522714951, 142.41041997364 43.771763239032, 142.40907934689 43.7715568984069, 142.408989447974 43.7708816272824, 142.408993671801 43.7707270704637, 142.409665886757 43.7706891749005, 142.410226003758 43.7703456661322, 142.409786817328 43.769949126553, 142.410662224556 43.7698998505895, 142.412196418236 43.7698207971697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral