メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.88110906441 35.1198278110629, 136.881107144882 35.1202469655224, 136.879767635083 35.1202440145937, 136.878629577704 35.1202414670449, 136.878656972926 35.1194538679648, 136.879760922153 35.1194578091646, 136.881110795713 35.1194525442853, 136.88110906441 35.1198278110629)) ^^http://www.opengis.net/ont/geosparql#wktLiteral