メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.693237763936 35.4312245754804, 136.692726949462 35.4312110629265, 136.690903816351 35.4312024304219, 136.690311823085 35.4311893628166, 136.690490562968 35.4306635746562, 136.690626051155 35.430308454264, 136.692746195041 35.4303121266182, 136.692747885565 35.4298396513864, 136.692749850008 35.429298378192, 136.693249352299 35.4293021988746, 136.693237763936 35.4312245754804)) ^^http://www.opengis.net/ont/geosparql#wktLiteral