メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.084866685398 39.6953962590054, 141.084626927546 39.6954346389695, 141.084400004185 39.6954510672329, 141.083871332286 39.6954741284026, 141.0838420733 39.6945217145936, 141.08377956193 39.6936431181448, 141.084042612128 39.6936305895077, 141.084862623749 39.6935770245148, 141.084995546945 39.6953680783172, 141.084866685398 39.6953962590054)) ^^http://www.opengis.net/ont/geosparql#wktLiteral