メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.810613585704 43.3905554348451, 144.812289155802 43.3903829361834, 144.816254773634 43.3896928241599, 144.819150454709 43.389196173019, 144.812346418379 43.3946994123854, 144.811004955015 43.3937642935727, 144.80920152439 43.3926023828699, 144.808558634015 43.3921882083907, 144.808484694335 43.3921406036262, 144.80792129546 43.3918140932903, 144.807741177695 43.3916860971099, 144.807322095413 43.3913882092502, 144.807934867331 43.3908812673514, 144.808269382346 43.3907967084851, 144.810394679879 43.3905779542314, 144.810613585704 43.3905554348451)) ^^http://www.opengis.net/ont/geosparql#wktLiteral