メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.915931833922 35.0762212322444, 136.915932326243 35.07623545928, 136.915915427742 35.0762359177357, 136.914706964276 35.0760646915388, 136.914694119993 35.0760628333011, 136.914639937088 35.0755953690516, 136.914589180987 35.0750783303828, 136.915900368193 35.0752400496385, 136.915916424203 35.0757407474978, 136.915931833922 35.0762212322444)) ^^http://www.opengis.net/ont/geosparql#wktLiteral