メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.697243248011 44.363525882356, 141.696771583076 44.3638349809804, 141.695706426393 44.3629911278738, 141.696177526872 44.362679320658, 141.696260284975 44.3626236113722, 141.696603792638 44.3623923620275, 141.697062384025 44.3627005982619, 141.697434125953 44.362953214644, 141.697765086684 44.3631910769769, 141.697243248011 44.363525882356)) ^^http://www.opengis.net/ont/geosparql#wktLiteral