メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.250510174692 36.0465648481931, 136.250480934734 36.0465650229772, 136.251045734467 36.0457329497682, 136.251144690582 36.0455760585398, 136.251467897223 36.0450249886802, 136.251661197541 36.0447146259406, 136.252271577124 36.0449362888421, 136.252018373538 36.0453718540826, 136.252014784767 36.0455587971823, 136.252056018638 36.0456489215664, 136.252041371519 36.0465558099141, 136.251335086176 36.046582222534, 136.251103941491 36.0465613412031, 136.250510174692 36.0465648481931)) ^^http://www.opengis.net/ont/geosparql#wktLiteral