Question: Which American artist, best known for his silkscreen paintings "Campbell's Soup Cans" (1962) and "Marilyn Diptych" (1962), helped usher in the Golden Age of Porn with his 1969 film "Blue Movie"?
Sentence (from "Pornography in the United States"): Pornography in the United States has existed since the country's origins and has become more readily accessible in the 21st century.
Relevant evidence: No