メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.059450346498 42.9115128194325, 143.059036899079 42.9114831061553, 143.057383986353 42.9113646525877, 143.056601271547 42.9113100317661, 143.056661682422 42.9107847150739, 143.056666149812 42.9107456483195, 143.056718224551 42.9102929718088, 143.056821937035 42.9103001187275, 143.058909084662 42.9104019418424, 143.058847193041 42.9107686721173, 143.059552718447 42.9108179142191, 143.059450346498 42.9115128194325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral