メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.027338772612 34.9213734391232, 137.026292998872 34.9224062395567, 137.023451939973 34.9204890062985, 137.020765964422 34.9186697471965, 137.022567190954 34.9168910794471, 137.022697946647 34.9170896249123, 137.022898200257 34.9173345224287, 137.02366092646 34.9180263739687, 137.024991457022 34.9191827828494, 137.026176396773 34.9202233717305, 137.026633237756 34.9206492053934, 137.02687455755 34.9208669609214, 137.027338772612 34.9213734391232)) ^^http://www.opengis.net/ont/geosparql#wktLiteral