SRL for [notable]: The prolific seventies American stand - up , George Carlin , was [notable] for his routines on taboo subjects and dark humour , but he will go down in controversial - comedian history for his ? Seven Dirty Words ? routine , which pre - empted the seven most offensive swear words for US television .
ARG-1: The prolific seventies American stand - up , George Carlin | ARG-2: for his routines on taboo subjects and dark humour