メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.655009350793 42.8101908049727, 143.65498188866 42.8101929704678, 143.653611530548 42.8103003704188, 143.65341671885 42.8103157002388, 143.653281849273 42.8092798300483, 143.653222891679 42.8088518146578, 143.653219070699 42.8088053021051, 143.654109753215 42.8087305188894, 143.654799312019 42.8086747951289, 143.654806387051 42.8087257679654, 143.655009350793 42.8101908049727)) ^^http://www.opengis.net/ont/geosparql#wktLiteral