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In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Alexander Joseph "Lex" Luthor is a fictional supervillain appearing in American comic books published by DC Comics, though on occasions he has established himself as an antihero. He was created by Jerry Siegel and Joe Shuster. Lex Luthor first appeared in "Action Comics" #23 (April 1940) and has since endured as the archenemy of Superman. Question: What is the name of this fictional supervillain appearing in American comic books published by DC Comics that Clark Kent fights in New York in the novel "It's Superman!?" Answer: Lex Luthor
Output:
Alexander Joseph Lex Luthor is a fictional supervillain appearing in American comic books published by DC Comics, though on occasions he has established himself as an antihero.