メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.865140179901 35.387177894808, 136.86516963904 35.3871416312198, 136.865194433048 35.387111060781, 136.866646093021 35.3853709532742, 136.866944645503 35.3854845156355, 136.8671993904 35.3855327572498, 136.867674577699 35.3855285238368, 136.868582172556 35.3854264245003, 136.869448503567 35.3853380194123, 136.869659776444 35.3867592120345, 136.865776364011 35.3871316809649, 136.865140179901 35.387177894808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral