メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.867106456759 35.1808374929459, 136.867067449692 35.1812383794133, 136.866232883693 35.181242162428, 136.865050859841 35.181250289168, 136.865032732026 35.1808658802042, 136.865036854805 35.1805013861611, 136.866224518249 35.1805021482258, 136.867139086074 35.1805333506854, 136.867106456759 35.1808374929459)) ^^http://www.opengis.net/ont/geosparql#wktLiteral