メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.009185672942 34.8840143620206, 137.009047673997 34.8839751624627, 137.008648406764 34.8838311735061, 137.00792194004 34.8835474411194, 137.006794370615 34.8829344765536, 137.006948305409 34.882531257051, 137.007110106705 34.8821306529556, 137.007408734807 34.8824498849209, 137.007579384513 34.8825589246257, 137.007709209448 34.8826418513807, 137.009514750883 34.8831313146353, 137.009185672942 34.8840143620206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral