メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.29991840342 43.0675522833523, 141.299400980094 43.0678445625974, 141.299013681594 43.0680526829144, 141.298768071382 43.0681857429613, 141.298251185008 43.0684674727443, 141.297130619854 43.0690782358084, 141.296795501143 43.0688089685534, 141.2967618781 43.068787308508, 141.29641366432 43.0685028813599, 141.297228886553 43.0680538713284, 141.298045027856 43.0676129505213, 141.298417830926 43.0674055573237, 141.29867435941 43.0672673135482, 141.298789235417 43.0672078564186, 141.299165626438 43.0669977476362, 141.299203086948 43.0669758345458, 141.29991840342 43.0675522833523)) ^^http://www.opengis.net/ont/geosparql#wktLiteral