メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.987920802736 34.8907243000236, 136.987228726794 34.8907624340107, 136.986858312995 34.8907765330225, 136.986196505701 34.8908097759064, 136.985790113276 34.8908256489112, 136.98506848805 34.8908566830943, 136.984989760678 34.8900977598479, 136.985986911009 34.8899758622205, 136.987086691768 34.8898487568747, 136.987841438735 34.8897828975487, 136.987856999427 34.889928849791, 136.987920802736 34.8907243000236)) ^^http://www.opengis.net/ont/geosparql#wktLiteral