メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.910690574216 35.0781292194673, 136.911456204502 35.078056450312, 136.911650913348 35.0792212181586, 136.910882436433 35.0792895452782, 136.909672421325 35.0793941231513, 136.909255566316 35.0794343772865, 136.909247189356 35.0794423177778, 136.909222664666 35.0790901348621, 136.909204532147 35.0788938181824, 136.909197748151 35.0782830670667, 136.910690574216 35.0781292194673)) ^^http://www.opengis.net/ont/geosparql#wktLiteral