メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.719806218074 35.3692120487159, 136.717719853461 35.3693134383272, 136.715681391727 35.3694181419422, 136.713596428026 35.3695056653824, 136.713536705563 35.3686294069364, 136.713461324623 35.3674518282102, 136.715536364957 35.3673565288228, 136.717578713821 35.3672493831019, 136.719664755621 35.3671449697222, 136.719806218074 35.3692120487159)) ^^http://www.opengis.net/ont/geosparql#wktLiteral