Question: Who came to prominence first, Saul Metzstein or Elem Klimov?
Context: "The Snowmen" is an episode of the British science fiction television series "Doctor Who", first broadcast on Christmas Day 2012 on BBC One.  It is the eighth "Doctor Who" Christmas special since the show's 2005 revival and the first to be within a series.  It was written by head writer and executive producer Steven Moffat and directed by Saul Metzstein. Aleksei Vasilyevich Petrenko (Russian: Алексей Васильевич Петренко ; 26 March 1938 – 22 February 2017) was a Soviet and Russian film and stage actor.  He played Grigori Rasputin in the Elem Klimov's historical drama Saul Metzstein (born 30 December 1970) is a Scottish film director.  He is the son of renowned modernist architect Isi Metzstein, and Danielle Kahn.  Metzstein was raised in Glasgow.  He came to prominence with the 2001 feature "Late Night Shopping" (2001). Come and See (Russian: Иди и смотри , "Idi i smotri"; Belarusian: Ідзі і глядзі , "Idzi i hlyadzi") is a 1985 Soviet war drama film directed by Elem Klimov, with a screenplay by Klimov and Ales Adamovich, starring Aleksei Kravchenko and Olga Mironova.  Set during the Nazi German occupation of the Byelorussian SSR, the film follows a young boy as he witnesses the atrocities committed on the populace. Adventures of a Dentist (Russian: Пoхoждения зубногo врача , "Pokhozhdyeniya zubnovo vracha " ) is a 1965 Soviet dark comedy/drama feature film directed by Elem Klimov on Mosfilm.  It is currently unavailable on video or DVD for any audience, but is occasionally screened at film festivals. Agony (Russian: Агония , "Agoniya " ; U.S. theatrical/DVD title "Rasputin") is a film by Elem Klimov, made c.1973-75 and released in Western and Central Europe in 1982 (USA and Soviet Union 1985), after protracted resistance from Soviet authorities.  The film is notable for its rich, sometimes baroque style, its sumptuous recreation of episodes from the final year of Imperial Russia and the psychological portraits of Grigori Rasputin and the Imperial family. Farewell (Russian: Прощание ) is a 1983 Soviet drama film based on Valentin Rasputin's novel "Farewell to Matyora" and directed by Elem Klimov. The 14th Moscow International Film Festival was held from 28 June to 12 July 1985.  The Golden Prizes were awarded to the Soviet film "Come and See" directed by Elem Klimov, the American film "A Soldier's Story" directed by Norman Jewison and the Greek film "The Descent of the Nine" directed by Christos Siopahas. Welcome, or No Trespassing (Russian: Добро пожаловать, или Посторонним вход воспрещён , "Dobro pozhalovat, ili Postoronnim vkhod vospreshchyon " ) is a Soviet movie by Elem Klimov made in 1964.  It is a satirical comedy about the excessive restrictions that children face during their vacation in a Young Pioneer camp, imposed by their masters.  Most of the actors are children, while the protagonist is the director Dynin, played by Yevgeniy Yevstigneyev.  The film was selected to be screened in the Cannes Classics section of the 2015 Cannes Film Festival. Elem Germanovich Klimov (Russian: Эле́м Ге́рманович Кли́мов ; 9 July 1933 – 26 October 2003) was a Soviet Russian film director.  He studied at VGIK, and was married to film director Larisa Shepitko.  Klimov is best known in the West for his final film, 1985's "Come and See" ("Иди и смотри"), which follows a teenage boy in German-occupied Belarus during the German-Soviet War and is often considered one of the greatest war films ever made.  He also directed dark comedies, children's movies, and historical pictures.
Answer: Klimov