メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.88770071999 35.2420434766049, 136.887325787787 35.2419759873399, 136.886808533155 35.2419149974967, 136.88483529239 35.2418698348886, 136.884769247458 35.2378733381009, 136.886756703585 35.2378586730142, 136.886795743833 35.2394951326374, 136.886800816341 35.2414287020874, 136.887702889306 35.2414143848987, 136.88770071999 35.2420434766049)) ^^http://www.opengis.net/ont/geosparql#wktLiteral