メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.393841097452 34.4144225576562, 131.392975909352 34.4145542865421, 131.392564761717 34.4146020732654, 131.392417450748 34.413910701287, 131.392415915906 34.4139034973132, 131.392380911187 34.413762382786, 131.392356889537 34.4136393964085, 131.393690540535 34.4134545706194, 131.39379942638 34.4139880133646, 131.393718142373 34.4140008573158, 131.393724188736 34.4140319065656, 131.393762670768 34.4140412126955, 131.393788461335 34.4141709119801, 131.393841097452 34.4144225576562)) ^^http://www.opengis.net/ont/geosparql#wktLiteral