premise: Black Canary is a character in Batman comic books.
hypothesis: Black Canary is a fictional superheroine in comic books published by DC Comics . Created by the writer-artist team of Robert Kanigher and Carmine Infantino , the character debuted in Flash Comics # 86 ( August 1947 ) . Harley Quinn ( Harleen Frances Quinzel ) is a fictional supervillain appearing in American comic books published by DC Comics .