メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.831264109003 35.2270680656815, 136.830228214829 35.226982593342, 136.829687147771 35.2269432057461, 136.829688635684 35.2271589920427, 136.82873775308 35.2271300835492, 136.828753045819 35.2268677223409, 136.828765728919 35.2263809097421, 136.82925104614 35.2264366962041, 136.82965590256 35.2264825400871, 136.829967342675 35.2264862907014, 136.8312353112 35.2264432459341, 136.831264109003 35.2270680656815)) ^^http://www.opengis.net/ont/geosparql#wktLiteral