claim: The Challenge XXX: Dirty 30 is a season of an Australian TV show.
evidence: Harold Harrison may refer to  :. Harold Harrison -LRB- cricketer -RRB- -LRB- 1885 -- 1962 -RRB- , cricketer for Yorkshire. Harold Harrison -LRB- rugby player -RRB- -LRB- 1889 -- 1940 -RRB- , England rugby union international. Harold E. Harrison -LRB- 1908 -- 1989 -RRB- , researcher in pediatrics , see Harold E. Harrison and Helen C. Harrison. Harold E. Harrison and Helen C. Harrison. Harold E. Harrison and Helen C. Harrison