メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.997854967294 34.8977719221208, 136.997746394494 34.8979805909309, 136.997480098512 34.8984744848358, 136.996170894287 34.8970783156344, 136.995611981621 34.8964879726075, 136.996658579902 34.8957564289134, 136.996701052408 34.8956423952777, 136.996798206135 34.8953492680886, 136.998214960667 34.8961007401694, 136.998245518891 34.8968328130977, 136.998215550569 34.8970241241417, 136.998142525657 34.8972091786662, 136.997854967294 34.8977719221208)) ^^http://www.opengis.net/ont/geosparql#wktLiteral