メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.697927734701 33.2367336015987, 131.698312463724 33.2375815830199, 131.696396360008 33.2379732976363, 131.695603066964 33.2381525452611, 131.69473934707 33.238193223659, 131.693875092916 33.2381824059489, 131.693791502421 33.2377882669021, 131.693689443852 33.2373112462072, 131.693603188476 33.2368922201554, 131.694436311883 33.2367739983786, 131.695194283604 33.2366716731323, 131.697672147056 33.2363234927988, 131.697927734701 33.2367336015987)) ^^http://www.opengis.net/ont/geosparql#wktLiteral