メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.119121712177 37.9209350079856, 140.117417016959 37.9212562038333, 140.117324187343 37.9195762589089, 140.117229714451 37.917805075337, 140.117197051671 37.9173947794185, 140.119073289636 37.9171961191441, 140.119034171348 37.919489215545, 140.119121712177 37.9209350079856)) ^^http://www.opengis.net/ont/geosparql#wktLiteral