メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.830588474731 35.5206725925895, 137.830485609879 35.5207114899073, 137.830485991519 35.5206655087128, 137.830021520591 35.5206074361466, 137.830070434656 35.5201004864592, 137.830125239158 35.5194758564389, 137.830186465922 35.5194775347148, 137.830209456005 35.5194938945506, 137.830297330773 35.5196729680513, 137.830404339462 35.5199386577008, 137.830471984384 35.5201581748577, 137.830516997393 35.5203180273735, 137.830558876865 35.5204508219103, 137.83065487705 35.5206475057956, 137.830588474731 35.5206725925895)) ^^http://www.opengis.net/ont/geosparql#wktLiteral