メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.847426397704 35.4122562887224, 136.846485665494 35.4121591552843, 136.845539140602 35.4120807718087, 136.844577377058 35.4119898056212, 136.843578050646 35.4119144707526, 136.843573969284 35.4106799683821, 136.846617528998 35.4109431839203, 136.846705288651 35.4102496187675, 136.846744435516 35.4102526796206, 136.847694808709 35.4103273078301, 136.847426397704 35.4122562887224)) ^^http://www.opengis.net/ont/geosparql#wktLiteral