Question: Which american film is a documentary film, Trenchcoat or Secrets of Life?
Context: Jim Dziura is an American film director, cinematographer, and editor.  His work often involves heavily music-related themes and his subjects are often marginalized members of society.  His work includes the feature-documentary "Whiskey on a Sunday" (2006) about the rock band Flogging Molly for which Jim was awarded a Platinum disc from the RIAA, the short documentary film "Steel Don't Bend" (2007) about modern-day hobos, the short documentary film "That's Life" (2007) about punk rock icon Duane Peters, the 10-episode "Road to the Throwdown" series (2008) about the rock band The Mighty Mighty Bosstones, and the feature-length documentary "Number One with a Bullet" (2008) produced by QD3 and starring Ice Cube, KRS-One, Young Buck, B-Real, Obie Trice, Jerry Heller, and Damon Dash.  The film was the opening night film at the 2008 Hollywood Film Festival and additionally screened at 2009 South by Southwest Film Festival.  In 2001, Jim directed a feature-length documentary about Swedish musician Moneybrother for Red Bull . Trenchcoat is a 1983 American action comedy film starring Margot Kidder and Robert Hays. Joke Fincioen is an American television producer, filmmaker, director, and showrunner.  She pronounces her first name /jōk/.  Her television credits include the VH1 reality TV acting competition series "Scream Queens", the MTV documentary series "Caged", The CW social experiment "Beauty and the Geek", and the MTV "True Life" "Presents" documentary feature "Secrets, Lies, and Sex".  Her filmmaking credits include the theatrically released, feature-length documentary "Dying to do Letterman", which was invited by the International Documentary Association to qualify for Academy Award consideration.  She has produced and contributed to over one-hundred hours of TV and film. Bill Nichols (born 1942) is an American film critic and theoretician best known for his pioneering work as founder of the contemporary study of documentary film.  His 1991 book, "Representing Reality: Issues and Concepts in Documentary", applied modern film theory to the study of documentary film for the first time.  It has been followed by scores of books by others and by additional books and essays by Nichols.  The first volume of his two-volume anthology "Movies and Methods" (1976, 1985) helped to establish film studies as an academic discipline. Jamie Meltzer is an American movie and documentary film director.  He has made "True Conviction", ""Off the Charts: The Song-Poem Story"", ""Welcome to Nollywood"", ""La Caminata"" (a short film), and the feature-length documentary film ""Informant"".  He teaches documentary film production in the Art Department of Stanford University, as part of the MFA Program in Documentary Film. Secrets of Life is a 1956 American documentary film written and directed by James Algar.  The documentary follows the changing world of nature, the sky, the sea, the sun, planets, insects and volcanic action.  The documentary was released on November 6, 1956, by Buena Vista Distribution. Biagio Messina is an American television producer, director, showrunner, filmmaker, and actor.  His hometown is Cleveland, Ohio.  He played the role of Marc Cram on the Nickelodeon sitcom "Kenan & Kel".  His filmmaking credits include the feature-length, theatrically released documentary "Dying to do Letterman", which was invited by the International Documentary Association to qualify for Academy Award consideration.  Messina's television producing credits include the VH1 reality TV series "Scream Queens", the MTV documentary series "Caged", The CW reality show "Beauty and the Geek", and the MTV "True Life" "Presents" documentary "Secrets, Lies, and Sex".  Messina has produced and contributed to over one-hundred hours of TV and film. Documentary mode is a conceptual scheme developed by American documentary theorist Bill Nichols that seeks to distinguish particular traits and conventions of various documentary film styles.  Nichols identifies six different documentary 'modes' in his schema: poetic, expository, observational, participatory, reflexive, and performative.  While Nichols' discussion of modes does progress chronologically with the order of their appearance in practice, documentary film often returns to themes and devices from previous modes.  Therefore, it is inaccurate to think of modes as historical punctuation marks in an evolution towards an ultimate accepted documentary style.  Also, modes are not mutually exclusive.  There is often significant overlapping between modalities within individual documentary features.  As Nichols points out, "the characteristics of a given mode function as a dominant in a given film…but they do not dictate or determine every aspect of its organization."  (Nichols 2001) Favela Rising is a 2005 documentary film by American directors Jeff Zimbalist and Matt Mochary.  It was produced by Sidetrack Films and VOY Pictures.  It debuted at the Tribeca Film Festival on April 24, 2005 where it won the award for "Best New Documentary Filmmaker" for Zimbalist and Mochary.  The film's look at life in Brazil's slums won it further awards such as "Best Documentary Film" from the New York Latino Film Festival and "Best Feature Documentary" from Big Sky Documentary Film Festival.  The film has won over twenty-five international festival awards and was short-listed for an Oscar. Panic is a 2005 thriller by Jeff Abbott about an unsuspecting young documentary film maker, Evan, whose life is turned upside down when he realizes that his parents have been working as spies throughout their lives.  One morning his mother phones him and asks him to come to her urgently, but when he arrives at her home she has just been murdered and he barely manages to escape with his life.  Evan is suspected of having received from his mother a copy of a list of members and clients of a secret organisation called "The Deeps" and the chase is on.  Evan must struggle through his mother's death and meets C.I.A. agents, cold-hearted killers, and double-crossers, and friends - trying to find his father, get his revenge on the people who murdered his mother, and uncover all the secrets about the lie he believed was his life.  He also tries to save a lovely girl named Carrie whom he has recently met and fallen in love with, but doesn't know whose side she is on, "The Deeps" or the C.I.A.
Answer: Secrets of Life