メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339413695564 43.0310615592167, 141.339373919263 43.0313138692282, 141.339357709071 43.0314830254376, 141.339326293865 43.0317533362997, 141.338342242306 43.0316864230455, 141.337571847183 43.0316476493821, 141.337631523999 43.0312044810332, 141.337669303896 43.0309321112062, 141.337754513414 43.0302989037432, 141.337756776603 43.0302819722852, 141.338250289616 43.0303275411911, 141.338512601983 43.0303517846973, 141.338528110312 43.0303532441689, 141.338574565779 43.0303559358895, 141.33948476312 43.0304110067077, 141.339496543405 43.030411733305, 141.339413695564 43.0310615592167)) ^^http://www.opengis.net/ont/geosparql#wktLiteral