メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.347522015888 43.0529912673199, 141.347378066565 43.0535733064171, 141.347226149786 43.0541359411259, 141.346822865011 43.0540844411437, 141.346422261195 43.054033241792, 141.346309306064 43.0540188462128, 141.345633870824 43.0539267204152, 141.345683614807 43.0537432302326, 141.345717525337 43.0536181426614, 141.345762446746 43.0534523783454, 141.345776240194 43.0534012873576, 141.345794389154 43.0533344769424, 141.345822035282 43.0532346873067, 141.345848971903 43.0531375639064, 141.345861425373 43.0530928619778, 141.345891193924 43.0529857036851, 141.345946792854 43.0527850005799, 141.347522015888 43.0529912673199)) ^^http://www.opengis.net/ont/geosparql#wktLiteral