メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.330438359679 43.0761616713267, 141.330829976269 43.0761684078835, 141.331211932251 43.0761731668902, 141.332014488091 43.0761903759123, 141.331733523052 43.0768687647282, 141.331643153793 43.0770931621543, 141.331520336861 43.0774023977039, 141.331489766636 43.0774835924661, 141.331003154442 43.077522300525, 141.330377580539 43.0775571455685, 141.329467750834 43.0774691543881, 141.329470015955 43.0771063444105, 141.329495373371 43.0761558386976, 141.329998317344 43.0761598882072, 141.330438359679 43.0761616713267)) ^^http://www.opengis.net/ont/geosparql#wktLiteral