Question: Which film director is the founder of the Application Movie Pitch Pro, Derek Estlin Purvis or Andrzej Munk?

Context paragraphs:
Andrzej Munk: Andrzej Munk (16 October 1921 – 20 September 1961) was a Polish film director, screen writer and documentalist.  He was one of the most influential artists of the post-Stalinist period in the People's Republic of Poland.  His feature films "Man on the Tracks" ("Człowiek na torze", 1956), "Eroica" ("Heroism", 1958), "Bad Luck" ("Zezowate szczęście", 1960), and "Passenger" ("Pasażerka" 1963), are considered classics of the Polish Film School developed in mid-1950s.  He died as a result of a car crash in Kompina in a head-on collision with a truck.

Airtight (film): Airtight is a 2014 American drama thriller film written, produced and directed by Derek Estlin Purvis.  A psychological thriller set in a NY mansion and an homage to Alfred Hitchcock, "Airtight" is based on the true events that inspired a play in the 1920s, an adaptation by Hitchcock in the 1940s and this feature film from 2013.

Andrzej Zaorski: Andrzej Adam Zaorski (born 17 December 1942, Piaski, Poland) is a Polish actor and cabaret artist, appearing in television, film and theater, as well as on the radio.  He is the son of , the brother of film director Janusz Zaorski, and the father-in-law of rapper Andrzej Butruk.

Derek Estlin Purvis: Derek Estlin Purvis (born November 27, 1972) is an American film director, producer, executive producer, screenwriter, and entrepreneur.  He has financed, produced or directed 13 films of various genres.  He is a founder and creator of the Application Movie Pitch Pro.

Eroica (1958 film): Eroica (released in some territories as Heroism) is a 1958 film by Andrzej Munk.  It is composed of two separate stories, each featuring the Polish concept of heroism and a role of a hero.

Omar Sangare: Omar Sangare is a Polish actor and director, who graduated from The Aleksander Zelwerowicz National Academy of Dramatic Art in Warsaw, where he studied with the Oscar-winning director Andrzej Wajda.  In 1994 he was awarded a scholarship to The British American Drama Academy in Oxford, England.  While there he worked with Derek Jacobi, Alan Rickman, Michael Kahn, and Jeremy Irons.  In 2006, Sangare received his Ph.D. from the Theater Academy in Warsaw.  Sangare taught at UCLA, UCSB, UCSD, Wesleyan University, and Westmont College.  Currently, he teaches in the Department of Theatre at Williams College.  In 2007, he became founder and artistic director of the Dialogue ONE, International Festival for solo performances at WilliamsTheatre.

Bad Luck (1960 film): Bad Luck (Polish: Zezowate szczęście ) is a 1960 Polish comedy film directed by Andrzej Munk.  It was entered into the 1960 Cannes Film Festival.

Man on the Tracks: Man on the Tracks (Polish: "Człowiek na torze" ) is a 1956 film by Andrzej Munk.

Passenger (1963 film): Passenger (Polish: "Pasażerka" ) is an unfinished 1963 Polish film directed by Andrzej Munk, which Witold Lesiewicz assembled for release.

Witold Lesiewicz: Witold Lesiewicz (9 September, 1922 – 23 March, 2012) was a Polish film director and screenwriter.  He directed 24 films between 1949 and 1979.  He completed the work on the 1963 film "Passenger" after the death of director Andrzej Munk.

Supporting paragraphs: Derek Estlin Purvis Andrzej Munk
Answer: Derek Estlin Purvis