メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.824650229442 35.3951611312537, 136.824404064898 35.3957753574759, 136.821127210814 35.3950498456677, 136.821404978857 35.3941698149147, 136.821494958283 35.3938916988989, 136.821654857554 35.3934462515341, 136.822297914104 35.393590321568, 136.824228262572 35.3940042717703, 136.825048244734 35.3941800901158, 136.824650229442 35.3951611312537)) ^^http://www.opengis.net/ont/geosparql#wktLiteral