question: What did Krishnan–Panju and Billy Bob Thornton have in common?
answer: filmmaker
context: Title: Chrystal (film)
  Passage: Chrystal is an American drama film, which was released to audiences in the United States on April 8, 2005.  The cast included Billy Bob Thornton, Lisa Blount, Harry Lennix, Walton Goggins, and Grace Zabriskie.  Ray McKinnon, in addition to playing the role of "Snake", directed, wrote, and produced the film.  The story is about a woman named Chrystal (Lisa Blount) who has been traumatized both physically and mentally from a car accident that took the life of her son.  Joe (Billy Bob Thornton), Chrystal's husband, has just been released from jail after a 16-year sentence stemming from multiple crimes he committed.
  Title: Billy Bob Thornton
  Passage: William Robert "Billy Bob" Thornton (born August 4, 1955) is an American actor, filmmaker, singer, songwriter, and musician.
  Title: Krishnan–Panju
  Passage: R. Krishnan (1909–1997) and S. Panju (1915–1984), collectively referred to as Krishnan–Panju, were Indian filmmakers.  The duo directed more than 50 films in South Indian languages and in Hindi.
  Title: Sling Blade (film)
  Passage: Sling Blade is a 1996 American drama film set in rural Arkansas, written and directed by Billy Bob Thornton, who also stars in the lead role.  It tells the story of a man named Karl Childers who has a developmental disability and is released from a psychiatric hospital, where he has lived since killing his mother and her lover when he was 12 years old, and the friendship he develops with a young boy and his mother.  In addition to Thornton, it stars Dwight Yoakam, J. T. Walsh, John Ritter, Lucas Black, Natalie Canerday, James Hampton, and Robert Duvall.
citations: Krishnan–Panju Billy Bob Thornton