メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.262950836676 44.0250855653079, 144.262918514766 44.02514016007, 144.262769221181 44.0253666506042, 144.262756203579 44.0253863990381, 144.262746668791 44.0253831650709, 144.262386640427 44.025261162107, 144.262568527233 44.0249918021912, 144.262588540772 44.0249612421125, 144.262950836676 44.0250855653079)) ^^http://www.opengis.net/ont/geosparql#wktLiteral