メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.63173406784 35.3588262726107, 136.631775181881 35.3583465248612, 136.631778232944 35.3583271725056, 136.633115847204 35.358416678766, 136.633136986249 35.3584176879573, 136.633095436439 35.3588961193448, 136.632787101877 35.3588773184103, 136.632215845635 35.3588460059363, 136.63173406784 35.3588262726107)) ^^http://www.opengis.net/ont/geosparql#wktLiteral