メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.233552200932 38.4314521117488, 141.23472348967 38.4316572819132, 141.235282017383 38.4317584071846, 141.235997729067 38.4318844678275, 141.235906647023 38.4327242008015, 141.235820589032 38.4335097186604, 141.234570086333 38.4330900145744, 141.233768454538 38.433050954582, 141.232172374388 38.4329754679, 141.232228122367 38.432471879896, 141.23238447277 38.4312412878354, 141.233552200932 38.4314521117488)) ^^http://www.opengis.net/ont/geosparql#wktLiteral