メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.866307193484 35.2791040727143, 136.866266848013 35.2796019310987, 136.865702992593 35.2796229411715, 136.864757724394 35.2796806863674, 136.863968027586 35.279727892498, 136.86415066406 35.2785788408064, 136.864786016134 35.2785786466449, 136.86635630749 35.2785869401826, 136.866326680376 35.2788750358687, 136.866307193484 35.2791040727143)) ^^http://www.opengis.net/ont/geosparql#wktLiteral