メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.246229103083 34.8367071853545, 138.246314946335 34.836506293187, 138.246653058814 34.8357589820699, 138.247203482373 34.835799371245, 138.248072774971 34.8358388860121, 138.248646017927 34.8357620593024, 138.248491028688 34.8359934423603, 138.248362278495 34.8360716995083, 138.247976586939 34.8361153261251, 138.247350637656 34.8360866783783, 138.247349721509 34.8363872648556, 138.247338204064 34.8367681182768, 138.246229103083 34.8367071853545)) ^^http://www.opengis.net/ont/geosparql#wktLiteral