Question: What do Rob Reiner and Lewis Milestone do?
Context: Fine Manners is a 1926 American black-and-white silent comedy film directed initially by Lewis Milestone and completed by Richard Rosson for Famous Players-Lasky/Paramount Pictures.  After an argument with actress Gloria Swanson, director Milestone walked off the project, causing the film to be completed by Rosson, who had picked up directorial tricks while working as an assistant director to Allan Dwan.  The success of the film, being Rosson's first directorial effort since he co-directed "Her Father's Keeper" in 1917 with his brother Arthur Rosson, won him a long-term contract with Famous Players-Lasky. Sylvia Anne "Annie" Reiner (born 1949) is an American author, playwright and poet.  She is the daughter of American producer, writer and actor Carl Reiner, and actress Estelle Reiner.  She is the sister of actor and director Rob Reiner. Lewis Milestone (born Leib Milstein; September 30, 1895 – September 25, 1980) was a Moldovan-born American motion picture director.  He is known for directing "Two Arabian Knights" (1927) and "All Quiet on the Western Front" (1930), both of which received Academy Awards for Best Director.  He also directed "The Front Page" (1931 – nomination), "The General Died at Dawn" (1936), "Of Mice and Men" (1939), "Ocean's 11" (1960), and received the directing credit for "Mutiny on the Bounty" (1962), though Marlon Brando largely appropriated his responsibilities during its production. Estelle Reiner (June 5, 1914 – October 25, 2008), described by "The New York Times" as "matriarch of one of the leading families in American comedy", was an actress and singer.  She was the wife of Carl Reiner and the mother of Rob Reiner. Kangaroo is a 1952 American Technicolor film directed by Lewis Milestone.  It is also known as The Australian Story (American subtitle).  The first Technicolor movie filmed on-location in Australia.  Strong winds on location forced Milestone to re-dub much of the exterior dialogue. The Widow (U.S. title) is a 1955 Italian black-and-white romantic drama film directed by Lewis Milestone and written by Milestone and Louis Stevens, based upon the novel "La Vedova" by Susan York.  Produced and originally released under the title La Vedova X, the film had theatrical release in Italy in 1955, limited release in the United States in 1957, and was released in France on June 4, 1959 under the title "La Veuve".  This was the last Milestone film involving his own writing. Robert Reiner (born March 6, 1947) is an American actor, writer, director, producer, and activist.  As an actor, Reiner first came to national prominence with the role of Michael Stivic on "All in the Family" (1971–79).  That role earned him two Emmy Awards during the 1970s.  As a director, Reiner was recognized by the Directors Guild of America (DGA) with nominations for the coming of age comedy-drama film "Stand by Me" (1986), the romantic comedy "When Harry Met Sally..." (1989), and the military courtroom drama "A Few Good Men" (1992).  He also directed the psychological horror-thriller "Misery" (1990), the romantic comedy fantasy adventure "The Princess Bride" (1987) and the heavy metal mockumentary "This Is Spinal Tap" (1984). Seven Sinners is a 1925 black-and-white silent crime comedy film directed by Lewis Milestone and written by Milestone and Darryl F. Zanuck.  The film was produced by Warner Bros.  Pictures. The Front Page is a 1931 American pre-Code comedy film, directed by Lewis Milestone and starring Adolphe Menjou and Pat O'Brien.  Based on a Broadway play of the same name, the film was produced by Howard Hughes, written by Bartlett Cormack and Charles Lederer, and distributed by United Artists.  The supporting cast includes Mary Brian, George E. Stone, Matt Moore, Edward Everett Horton and Walter Catlett.  At the 4th Academy Awards, the film was nominated for Best Picture, Milestone for Best Director, and Menjou for Best Actor. No Minor Vices is a 1948 American black-and-white comedy film written by Arnold Manoff and directed by Lewis Milestone with Robert Aldrich as 1st assistant director.  Created for David Loew's Enterprise Productions, it was the first of three films distributed by Metro-Goldwyn-Mayer after parting ways with United Artists, and was the last of four films made by Dana Andrews for director Milestone.
Answer: director