メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409685424388 43.7448210968914, 142.410270421645 43.7447913513044, 142.410519546106 43.745807344072, 142.409935417315 43.7458535449438, 142.40885457953 43.7459088123031, 142.407699545713 43.7459641894099, 142.407165090432 43.7460040337868, 142.407095039592 43.7460066610563, 142.406480973019 43.7460426733351, 142.406385534023 43.7449997948239, 142.407075271905 43.7449536593447, 142.408239839482 43.7448781802869, 142.408241609039 43.7448967427233, 142.409405471713 43.7448304839935, 142.409685424388 43.7448210968914)) ^^http://www.opengis.net/ont/geosparql#wktLiteral