メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.993675847092 43.5619876282278, 144.993575157397 43.5619168451001, 144.992847370116 43.5614139302382, 144.994345563013 43.5601573227064, 144.995170637036 43.560098998783, 144.995174389991 43.5607047737697, 144.994654840014 43.5604390070962, 144.99398486271 43.5610122723006, 144.994397523852 43.5613516312347, 144.993675847092 43.5619876282278)) ^^http://www.opengis.net/ont/geosparql#wktLiteral