メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.317318816622 43.066173733903, 141.316561027309 43.0665911451846, 141.31678364142 43.0668263817751, 141.316758400796 43.0669346232346, 141.316278886355 43.067174330319, 141.3156675887 43.0674758335655, 141.315188519261 43.0666954197125, 141.315643612509 43.0664468667414, 141.3158187625 43.0663461096155, 141.316160261213 43.066161892268, 141.316919068538 43.065746813557, 141.317318816622 43.066173733903)) ^^http://www.opengis.net/ont/geosparql#wktLiteral