メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350298845535 43.1061979889906, 141.350890506877 43.106280966309, 141.350699642107 43.1070514595378, 141.350621666523 43.1070410038685, 141.350113444439 43.1069817468188, 141.350089249796 43.1069756502557, 141.34948665992 43.106917620738, 141.349599175097 43.1065165782637, 141.349692414639 43.1061208698082, 141.350298845535 43.1061979889906)) ^^http://www.opengis.net/ont/geosparql#wktLiteral