Question: Blake Edwards and Robert Altman were both famous directors of which nationality?

Context paragraphs:
List of Peter Gunn episodes: Peter Gunn is an American private eye television series which aired on the NBC and later ABC television networks from 1958 to 1961.  The show's creator (and also writer and director on occasion) was Blake Edwards.  It was also directed by Boris Sagal, Robert Gist, Jack Arnold, Lamont Johnson, one episode by Robert Altman, and several others.  A total of 114 thirty-minute episodes were produced by Spartan Productions.  Season one was filmed at Universal Studios, seasons two and three were filmed at Metro-Goldwyn-Mayer.  Philip H. Lathrop and William W. Spencer were cinematographers on many episodes.  Craig Stevens' wardrobe was tailored by Don Richards and Lola Albright's fashions by Jax.

Blake Edwards: Blake Edwards (born William Blake Crump; July 26, 1922 – December 15, 2010) was an American film director, screenwriter, and producer.

Robert Altman: Robert Bernard Altman ( ; February 20, 1925 – November 20, 2006) was an American film director, screenwriter, and film producer.  A five-time nominee of the Academy Award for Best Director and an enduring figure from the New Hollywood era, Altman was considered a "maverick" in making films with a highly naturalistic but stylized and satirical aesthetic, unlike most Hollywood films.  He is consistently ranked as one of the greatest and most influential filmmakers in American cinema.

Suicide Is Painless: "Song from M*A*S*H (Suicide Is Painless)" is a song written by Johnny Mandel (music) and Mike Altman (lyrics), which was the theme song for both the movie and TV series "M*A*S*H".  Mike Altman is the son of the original film’s director, Robert Altman, and was 14 years old when he wrote the song’s lyrics.  During an appearance on "The Tonight Show Starring Johnny Carson" in the 1980s, Robert Altman said that while he only made $70,000 for having directed the movie, his son had earned more than $1 million for having co-written the song.

Independent Spirit Robert Altman Award: The Independent Spirit Robert Altman Award is presented to the ensemble cast, director and casting director of a film by the Film Independent, a non-profit organization dedicated to independent film and independent filmmakers.  It is named after director, screenwriter, and producer Robert Altman, who is considered a "maverick" in naturalistic films.

The Film That Changed My Life: The Film That Changed My Life (also known as "The Film That Changed My Life: 30 Directors on Their Epiphanies in the Dark") is a non-fiction collection of interviews compiled by American journalist, author and film columnist Robert K. Elder.  The book presents interviews with thirty famous directors who share stories about the movies that affected their career paths and directing styles.

Son of the Pink Panther: Son of the Pink Panther (1993) is a continuation of "The Pink Panther" film series.  Directed by Blake Edwards, it stars Roberto Benigni as Inspector Clouseau's illegitimate son.  Also in this film are "Panther" regulars Herbert Lom, Burt Kwouk and Graham Stark and a star of the original 1963 film, Claudia Cardinale.  It was the final film for both filmmaker Blake Edwards and composer Henry Mancini; Edwards retired from movie making, and Mancini died the following year.

A Wedding (opera): A Wedding is a comic opera based on Robert Altman's 1978 film "A Wedding" and was composed by William Bolcom with a libretto written by Robert Altman and Arnold Weinstein.

The Great Race: The Great Race is a 1965 American Technicolor slapstick comedy film starring Jack Lemmon, Tony Curtis, and Natalie Wood, directed by Blake Edwards, written by Blake Edwards and Arthur A. Ross, and with music by Henry Mancini and cinematography by Russell Harlan.  The supporting cast includes Peter Falk, Keenan Wynn, Arthur O'Connell and Vivian Vance.  The movie cost US$12 million, making it the most expensive comedy film at the time.

Lou Lombardo (filmmaker): Lou Lombardo (February 15, 1932 – May 8, 2002) was an American filmmaker whose editing of the 1969 film "The Wild Bunch" has been called "seminal".  In all, Lombardo is credited on more than twenty-five feature films.  Noted mainly for his work as a film and television editor, he also worked as a cameraman, director, and producer.  In his obituary, Stephen Prince wrote, "Lou Lombardo's seminal contribution to the history of editing is his work on "The Wild Bunch" (1969), directed by Sam Peckinpah.  The complex montages of violence that Lombardo created for that film influenced generations of filmmakers and established the modern cinematic textbook for editing violent gun battles."  Several critics have remarked on the "strange, elastic quality" of time in the film, and have discerned the film's influence in the work of directors John Woo, Quentin Tarantino, Kathryn Bigelow, and the Wachowskis, among others.  While Lombardo's collaboration with Peckinpah lasted just a few years, his career was intertwined with that of director Robert Altman for more than thirty years.  Lombardo edited Altman's 1971 film "McCabe & Mrs. Miller" (1971), which had "a radical approach to the use of dialogue and indeed other sound, both in and beyond the frame."  Towards the end of his career Lombardo edited "Moonstruck" (1987) and two other films directed by Norman Jewison.  While his editing is now considered "revolutionary" and "brilliant", Lombardo was never nominated for editing awards during his career.

Supporting paragraphs: Blake Edwards Robert Altman
Answer: American