Provide a list of benchmarked datasets related to the stochastic classification research area?
SELECT DISTINCT ?dataset ?dataset_lbl
WHERE {
  ?problem       a                orkgc:Problem;
                 rdfs:label       ?problem_lbl.  
  FILTER (str(?problem_lbl) = "stochastic classification")
  ?dataset       a                orkgc:Dataset;
                  rdfs:label       ?dataset_lbl.
  ?benchmark      orkgp:HAS_DATASET       ?dataset.
  ?cont           orkgp:HAS_BENCHMARK      ?benchmark;
                  orkgp:P32                ?problem.
}