you are a music education major who wants to study how lyrics in songs flow together. you are starting your studies by looking at how famous speeches are built.​ using sets i want you to calculate how many unique words there are in dr. king’s "i have a dream" speech.​ using sets i want you to calculate how many unique words there are in dr. king’s "letter from the birmingham city jail" text.​ next, i’d like to know how many of the words in the "i have a dream speech" were also used in the "letter from the birmingham city jail" text (count).​ now tell me what words that were used in the "i have a dream" speech were not used in the "letter from the birmingham city jail" text (list).​