question: While Anatole Litvak and Kinji Fukasaku are both directors, were they both responsible for their own screenplays as well?
answer: yes
context: Title: Kinji Fukasaku
  Passage: Kinji Fukasaku (深作 欣二 , Fukasaku Kinji , 3 July 1930 – 12 January 2003) was a Japanese film director and screenwriter.
  Title: Anatole Litvak
  Passage: Anatole Litvak (Russian: Анато́ль Литва́к ; May 21, 1902 – December 15, 1974) was a Russian-born American filmmaker who wrote, directed, and produced films in various countries and languages.  He began his theatrical training at age 13 in Leningrad.
  Title: Tovarich (film)
  Passage: Tovarich (the Russian word for comrade "tovarisch") is a 1937 American comedy film directed by Anatole Litvak, based on the 1935 play by Robert E. Sherwood, which in turn was based on the 1933 French play "Tovaritch" by Jacques Deval.  It was produced by Litvak through Warner Bros., with Robert Lord as associate producer and Hal B. Wallis and Jack L. Warner as executive producers.  The screenplay was by Casey Robinson from the French play by Jacques Deval adapted into English by Robert E. Sherwood.  The music score was by Max Steiner and the cinematography by Charles Lang.
  Title: The Fall of Ako Castle
  Passage: Swords of Vengeance: Fall of Ako Castle (赤穂城断絶 , Akō-jō danzetsu ) is a 1978 Japanese historical martial arts period film, directed by Kinji Fukasaku.  It depicts the story of the Forty-seven Ronin ("Chūshingura").  The film is one of a series of period films by Fukasaku starring Yorozuya Kinnosuke, including "Shogun's Samurai".
  Title: Battles Without Honor and Humanity: Proxy War
  Passage: Battles Without Honor and Humanity: Proxy War (Japanese: 仁義なき戦い　代理戦争 , Hepburn: Jingi Naki Tatakai: Dairi Senso ) is a 1973 Japanese yakuza film directed by Kinji Fukasaku.  It is the third film in a five-part series that Fukasaku made in a span of just two years.
citations: Anatole Litvak Kinji Fukasaku