メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.062000720932 42.9217704626913, 143.061395255689 42.921713143008, 143.061165898079 42.9217008419456, 143.061065391441 42.9216624496034, 143.061209102852 42.9204276635868, 143.062205276444 42.9204919897755, 143.062196124266 42.9205528217212, 143.062180813691 42.9206549117957, 143.06213249591 42.9209543074906, 143.062000720932 42.9217704626913)) ^^http://www.opengis.net/ont/geosparql#wktLiteral