メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.742956068353 35.1619373423141, 136.742976192141 35.1624712018673, 136.74288528989 35.1641059857114, 136.742840159718 35.1648613022314, 136.741089144682 35.1648067936506, 136.741101647356 35.1645060709027, 136.740242438069 35.1644708020326, 136.739325999028 35.1644409583428, 136.739344505695 35.1641247655008, 136.74249007699 35.1621744414595, 136.742956068353 35.1619373423141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral