メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.470046796117 43.4580252324257, 142.470272797415 43.4582699559941, 142.470508887798 43.4585278824847, 142.470744795777 43.4587874256011, 142.470985417938 43.45905617162, 142.46983403853 43.4596035173464, 142.469657011549 43.4596927136043, 142.468843732001 43.4601743842608, 142.468499493415 43.4597442215066, 142.467978522444 43.4591296808584, 142.467379926685 43.4584900027374, 142.468247486255 43.4580851400655, 142.469562492104 43.4574724094566, 142.470046796117 43.4580252324257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral