メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.843554531569 35.4085149359752, 136.843563627409 35.4092512213906, 136.840992962248 35.4092683527823, 136.838425722375 35.4092841722685, 136.838390003776 35.4085439410577, 136.838389010281 35.4085233044086, 136.838293535738 35.4070044679129, 136.840988714868 35.4069890663297, 136.843605444107 35.4069908592105, 136.843588641061 35.4078697512449, 136.843565134234 35.4083143323281, 136.843554531569 35.4085149359752)) ^^http://www.opengis.net/ont/geosparql#wktLiteral