メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.402156687607 44.1839710549412, 142.401663802733 44.1838739171938, 142.401540779285 44.1842870630252, 142.400604477701 44.1841316168727, 142.399764493964 44.1839924214585, 142.399925747961 44.1835313933953, 142.400142555084 44.1829106742694, 142.400343193019 44.1822869517955, 142.400369282844 44.1822916823848, 142.402826518226 44.1826681171745, 142.404541397221 44.1829284990499, 142.404714091411 44.1829547217499, 142.404294309948 44.1840578991596, 142.404290298621 44.1840697707776, 142.402216995375 44.1837742641404, 142.402156687607 44.1839710549412)) ^^http://www.opengis.net/ont/geosparql#wktLiteral