メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.38138013279 42.9833533210703, 144.379005926264 42.9829300347015, 144.378259571081 42.9827913947226, 144.37843371765 42.9822533827143, 144.379159269261 42.982377782155, 144.380445793501 42.9826091670466, 144.380490519891 42.9824676789536, 144.381470815823 42.9826349959846, 144.381416858384 42.9827920587289, 144.381539621487 42.9828077029339, 144.38138013279 42.9833533210703)) ^^http://www.opengis.net/ont/geosparql#wktLiteral