メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.833176696244 34.6671038240329, 137.832339477674 34.66745010694, 137.832107249931 34.6675808153296, 137.831857558931 34.6677843925386, 137.831777854058 34.6678803016944, 137.831636942792 34.668109266753, 137.831370553361 34.6680456827059, 137.831449918799 34.667524378441, 137.831526245282 34.6673819679572, 137.832092536404 34.6668369996566, 137.833176696244 34.6671038240329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral