メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.398554824655 43.0891668996, 141.399120236963 43.0889232692357, 141.39968098811 43.0896480752825, 141.400291364757 43.0904630559862, 141.400634817098 43.0909145727427, 141.399184058422 43.0914821690219, 141.39889173764 43.0915872439237, 141.398545481074 43.0911518071245, 141.398255339879 43.0907807137411, 141.397990218931 43.0904325222365, 141.397713932772 43.0900800974079, 141.397606528712 43.0901163602387, 141.397289106885 43.0896926688432, 141.398554824655 43.0891668996)) ^^http://www.opengis.net/ont/geosparql#wktLiteral