メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.312102542714 43.0640763658976, 141.311867227984 43.0642289487905, 141.311454203677 43.0644927411972, 141.311371479961 43.0645520534923, 141.31113512512 43.0646909125431, 141.310812482189 43.0648773087001, 141.310666127806 43.0649576887951, 141.310234857899 43.0652033930123, 141.309564077577 43.064733500288, 141.310133887499 43.0644103087374, 141.310269443829 43.0643334972844, 141.310879001978 43.064013653169, 141.311113184106 43.0637720259343, 141.311183645869 43.063705370119, 141.311391544269 43.063482585888, 141.311649807632 43.0636928075744, 141.312102542714 43.0640763658976)) ^^http://www.opengis.net/ont/geosparql#wktLiteral