メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.989458584734 34.8873774480188, 136.989448466805 34.8867413171895, 136.989476605976 34.8867317098065, 136.989545909352 34.8867080769805, 136.990219013359 34.886491366034, 136.990325351226 34.8864506015845, 136.991825211876 34.8858939257923, 136.991837715083 34.8860542416151, 136.99186742056 34.8870173337878, 136.991882319615 34.8874738059358, 136.989458584734 34.8873774480188)) ^^http://www.opengis.net/ont/geosparql#wktLiteral