メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.84052714379 43.0794918182218, 142.840079852874 43.0805815034187, 142.839939901575 43.0805502962997, 142.839370865927 43.0804276247265, 142.83925948123 43.0804035836727, 142.838874463462 43.0803301052917, 142.839201266482 43.0795104102905, 142.839311666152 43.0792266919644, 142.839476843691 43.0788025230867, 142.839512277302 43.0788105682946, 142.840541029303 43.0790447991701, 142.840696126838 43.0790800764715, 142.84052714379 43.0794918182218)) ^^http://www.opengis.net/ont/geosparql#wktLiteral