The semi-final stage of this year's competition opens tonight at the University of East Anglia in Norwich. Four winners of the first round heats compete for a place in the final of Mastermind 1984.Robert Foulkes (schoolteacher) Mars novels of Edgar Rice Burroughs Richard Joby (lecturer) Life and career of Isambard Kingdom BrunelMalcolm Parnell (publicity manager) Novels of Evelyn WaughPrimrose Wood (physiotherapist) Life of Sir Francis Drake Director