メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.990633018576 43.5531183676115, 144.989907767581 43.553763923038, 144.989456203113 43.5534689031517, 144.989857862184 43.5531369640349, 144.989454647807 43.5528803752267, 144.989847365228 43.5525602174026, 144.990633018576 43.5531183676115)) ^^http://www.opengis.net/ont/geosparql#wktLiteral