メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.264323752481 44.0248343505763, 144.264080104925 44.0249028275896, 144.263228552582 44.0249367394859, 144.26322546681 44.0250009736563, 144.26266631454 44.0248636100565, 144.262899803039 44.0245008497415, 144.263009171373 44.0243290331274, 144.264153860444 44.0243012858273, 144.264621372543 44.0243571997316, 144.264692200727 44.0247447871938, 144.264323752481 44.0248343505763)) ^^http://www.opengis.net/ont/geosparql#wktLiteral