Complex sentence: Albert Langer is an Australian political activist, best known for his 1996 conviction and gaoling on contempt charges after breaching an injunction forbidding his advocacy of marking electoral ballot papers in a way discouraged by the Australian Electoral Commission.
Split into simpler sentences: Albert Langer is an Australian political activist, best known for his 1996 conviction and jailing on charges arising solely from his political advocacy. His crime was to advocate marking electoral ballot papers in a way discouraged by the Australian Electoral Commission.