メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.59215392272 43.3342831339825, 145.59178243207 43.3343528554421, 145.591706294701 43.3328751645866, 145.592039253481 43.3330090881367, 145.592589260379 43.3332360912183, 145.593505105125 43.3336622170797, 145.593746982467 43.3337723595611, 145.59390263369 43.3338630864016, 145.59215392272 43.3342831339825)) ^^http://www.opengis.net/ont/geosparql#wktLiteral